Best Lawn Mower Blade Sharpener? Oregon vs All American, Work Sharp, Smith's

[@ProjectFarm]

Here's the list of products reviewed. More details in the video description. Thank you! All American Sharpener: amzn.to/3lfsxmz Oregon 88-025: amzn.to/3idqSMn Work Sharp: amzn.to/2VnTSI8 Smith’s: amzn.to/3lidfNW Funvolution: amzn.to/3A1680v Blade balancer: amzn.to/2VdC3fb

[@dalemyers3945]

Have used a 8” bench grinder with the tool rest set at 30 degrees for 50 years, blades last a long time. Watching all those gadgets for sharpening lawn mower blades convinced me to keep doing it my way. Thanks PF for all your work and saving me money.

[@ProjectFarm]

You are welcome!

[@matthewmiller6068]

My Grandfather always used a bench grinder, I have found an angle grinder with flap disc seems easier with funky shape mulch kits and just as fast as the bench grinder

[@JT-lq4yd]

No garage should be without a bench grinder and a vise.

[@RRaucina]

Try serrating the edges. Doubles the surface area and grabs thick stems. Hard surface one side and now its self sharpening.

[@galvanizedgnome]

Are you 100 years old?

[@enlightenedrenegade472]

Here's an idea: Garbage bags. See which ones hold the best against tearing. I've had some trash bags tear at about 2lbs of trash before, there's gotta be better than that.

[@ProjectFarm]

Thank you for the video idea!

[@Mogotogo6536]

What a great idea

[@FishFind3000]

Agreed. There’s the cheap see through bags that can’t hold anything and then theirs the solid bags that can take 50lbs of broken tile.

[@gus473]

Good idea, and hope some "flex" textured bags are part of the testing!

[@ThatGuy-sd3zl]

Yes, and make sure to test them falling off the farmabago. So often they fall out garbage trucks and tear open on the highway.

[@Ziphoroc]

The way he says “We’re gonna test that.” gets me so excited knowing he’s got a super cool test planned.

[@ProjectFarm]

Thank you!

[@ronholtz4882]

Nothing better than a bench grinder. I've been sharpening my own blades for years and always get a good result.

[@lockpickinglawyer]

I’ve always put the blade in a vice, and used a file. It always seemed fast enough to me, but I wonder how that would stack up against these methods.

[@SnifferSock]

This man's patience knows no bounds.

[@jesusllanas9318]

File plus a Norton stone and your can get a great edge with a mirror polish….. seems over kill but I like to sharpen things also you can get away with sandpaper and a a flat piece of wood or metal or stone

[@sternberk]

its the best way, fast and not burning or annealing the metal

[@gregorystone1439]

I use a file and bench grinder. I seem to get a better angle with the file and I use the grinder to get me in a better place with a really nicked blade.

[@saigyl9149]

@@SnifferSock doesn't take that long unless your blade is so damaged it should just be replaced

[@dashriprock5720]

It's amazing how some content providers can take 15 to 20 minutes to provide you with a minute or two of useful info. This guy really packs it in. The between editing and and direct no nonsense, direct to the point narration this is some really top notch content.

[@ProjectFarm]

Thanks!

[@skeetorkiftwon]

@@ProjectFarm Your channel gets a lot of shares by me, so I don't have to explain it myself lol.

[@psilocybemusashi]

that's why we love it.

[@foli12321]

THIS! The value per minute in your videos is MUCH higher than the average KZbinr.

[@csimet]

That is why I love this guy and the work he does... detailed, yet to the point and with a summary of each test finding.

[@adamlyon5231]

I cut a lot of grass and sharpen blades on at least a bi-weekly basis. The All-American blade sharpener is the best sharpening tool I’ve ever used. I’ve tried them all.

[@carsonhart2536]

It looked the best, and quickest tbh. Very consistent

[@proscriptus]

Definitely a specialty tool, does one thing and does it well.

[@jeffsmith4110]

Adam... just curious... have you ever tried an RBG 712? They're way expensive, but appear to do a good job and fast. Hard to argue the price point on the All American, though.

[@allanwind295]

We will test that claim :-)

[@justinfiorini3142]

What's the best blade. The blade that came on my craftsman is crap. I thought I was getting a good product because it had a Honda motor. I cut high when its green and low when its brown.

[@dvgese]

I’ve been using my All American Sharpener for years now and it really does speed up the process. I sharpen anywhere from 11 to 30+ blades a week and usually only takes a few hours. I use mulching blades which can be more time consuming but I bought the sharpener with the adjustable cutting angle and it’s a cinch. Excellent review sir. Getting my sub.

[@ProjectFarm]

Thanks! Thanks for watching and subscribing!

[@floofsale]

Why do u sharpen so many blades a week. Do you have a blade sharpening business of some sort? Just wondering

[@kriss.8535]

What grit is used?

[@cbspeckman]

@@floofsale Likely owns a Lawn Care Business - We sharpen weekly, and depending on the size of the business and number of mowers this would be very realistic.

[@evilredBoris]

First he destroys lawn mowers now he’s fixing them. I love this channel. Very entertaining very informative.

[@ProjectFarm]

Thank you!

[@WarpedYT]

I Had no idea Lawn Mower sharpeners even exist! That's awesome

[@davidlotspeich5547]

I had the same thought. I usually used a file. Might have to look into these.

[@Aleks_Mechanics]

Hey there, Nice to see you here!👍🏻

[@ProjectFarm]

I used to just use a bench grinder. The good sharpening systems do a terrific job at forming a precise angle and the cut quality is so much better than before.

[@skinlab4239]

@@ProjectFarm make a removable surface at the proper angle for the bench grinder.

[@johndeerekid167]

Because I'm lazy, I just leave the blades on the deck and use a regular grinding stone on a drill. Might have to try one of these angled stones.

[@BuddysDIY]

Looks like my old 15 dollar garage sale bench grinder it is!

[@ObservationofLimits]

When was it ever not??

[@GratefulRob]

@@ObservationofLimits LOL same here. I have been validated too. HAHA!

[@BuddysDIY]

@@ObservationofLimits you right

[@tubastuff]

Same here; I clamp a guide to the toolrest to maintain the angle. D

[@dougroederer1092]

Vise and an angle grinder for me

[@DrDLightful]

I've been in the business almost 10 years. Mower blades don't need to be razor sharp or have the exact angle. An angle grinder works great with a little bit of experience, especially when you have a blade that spent half a season chopping up walnuts. I grind heavily until I get a decent edge, then I run one light pass down each side to remove the burrs and the result is a sharp edge. If you took off a lot of metal, check the balance.

[@ProjectFarm]

Thanks for the feedback.

[@adammerritt]

Anyone else find yourself rooting for whatever product you’ve already bought? I have the adjustable all American, so I was happy to see it did so well.

[@ProjectFarm]

Thanks for sharing.

[@gamingmadesimple5510]

I have the work sharp but I got it for my pocket knives. I own about 60 pocket knives and carry a different one every day of the month then sharpen them all once a month. Yes I am very rough on blade edges at work. Lawn mower is just a bench grinder for me, just eye ball it with no guide.

[@jameslmorehead]

Why not just use an angle grinder without a guide like us plebs?

[@adammerritt]

@@jameslmorehead I found I wasn't very good at maintaining a consistent angle. All in all, I prefer to have the right tool / best tool for the job, so long as I can afford it. I personally find that it makes the task more enjoyable and therefore more likely to be done, instead of put off for another day.

[@pistolpete9978]

I used a vise/file for over 25 years. 2 years ago I ordered the All-American- it works so well I feel like I wasted those 25 years trying to file blades sharp.

[@Mason-RRC]

I’m always shocked about how overlooked sharpening mower blades are. Many people don’t realize how much difference a sharp, true 30 degree angle cut makes. If you want your grass to look it best and to make your mower the most efficient, this is what you need to do. Also, this helps prevents lawn fungus. Dull and incorrect angle cutting can and will cause you lots of problems with all kinds of lawn fungus and diseases. $200+ for the All American was a lot for me to spend just for my own lawn, but quickly paid for itself, as I begin to sharpen neighbors and locals blades for a cheap price as a side hobby.

[@ProjectFarm]

Great feedback. Thank you

[@FindLiberty]

-FUNGUS- among us

[@alfredoprime5495]

True, but as this video shows, who is going to be willing to buy something that costs as much as the average push mower?

[@mikebiliamanator2129]

I didn't know but could you explain how having the wrong angle causes lawn problems?

[@netdoctor1]

@@alfredoprime5495 The guy who services mowers for other people, or the guy who sharpens blades for others to help pay for his equipment.

[@frankpequeno2430]

You Sir, did one hell of a job with your presentation, editing and spoke very clearly! Thanks for all the work you do! I’ve learned a few things today! Thanks again!

[@ProjectFarm]

Thank you very much!

[@pemtax557]

A couple of observations … I was taught by my dad to sharpen mower and edger blades with good quality flat file that allows you to better control angle while minimizing metal removal. Even with bad gouges and pitting, you should be able to sharpen both edges of the blade in less than 10 minutes. If you are going to use a bench grinder, insure that the tool rests are installed so that the grind angle is consistent and even. Cheers

[@ProjectFarm]

Thanks for the feedback.

[@californigirl]

Yeo, I hand file back then front angle, then balance the blade.

[@georgehofgren6123]

The big advantage to hand filing is that you don't heat the edge and take the temper out of it. But if it's easy enough to hand-file, is the mower blade really hard enough to begin with? 🤔

[@RealJeep]

With cheap CCP made steel now I wouldn't dare take a bench grinder to a blade. I have switched to a good flat file and can knock out three 20" blades in about 15 minutes. Easier to balance them that way too!

[@JohnBrown-gj1it]

Always flat filed my blades. Too much heat with grinders

[@electronicsNmore]

I've always used a bench grinder or angle grinder, they both do very well if you're able to keep the blade at the proper angle. Thanks for another fantastic video! A+

[@_thomas1031]

...me too😅🤙

[@RFXLR]

Agreed or at the very least, a file for mild to moderately dull blades

[@StudioDaVeed]

Angle grinder with 80 grit flap disc here too. I have a small (dozen customer) lawn mowing biz - I have 4 blades total for my Toro 22" Pace mower. Three always on stand by and rotate about every two weeks or as needed. I can freshen up all 4 faster than set up for some of these rigs ;) If a chip or gouge is deeper than quarter (coin) thickness the blade is toast. A little over kill maybe but I've always been paranoid about unbalanced/off weigh blades. Replacements are only 20 -40 bucks.

[@user-ef4gf7rr9r]

Was gonna say. Angle grinder and a vise are all you need. And not too sharp, either, because it'll peen. -a former landscaper

[@MrKco63]

agreed always have used a bench grinder and a fine tooth file to finish off the blade about every 15 lawn cuts or after hitting a rock or stump. Doesn't cost anything because i already have the tools from other uses Takes about 5 mins from removal to reattachment

[@neilorourke71]

I just sharpened my lawn mower blades. for the first time in 15 years. And then this video pops up. I am being watched.

[@ProjectFarm]

lol. Nice!

[@kevindowd31021]

Nice living room!

[@Dennis-sq2nm]

@@kevindowd31021 😆🤣😂

[@paulmarion3290]

Yes you are and now I am for talking to you 😳

[@faktransport]

I bought an All American 2 years ago and this is one of the best purchases I have made in years! Makes sharpening so much easier. Thanks for all the informative videos you provide.

[@Joseph-eh4rs]

Amazing. You spent $200 on a lawnmower blade sharpener???

[@faktransport]

@@Joseph-eh4rs Yes I did. I have 7 acres to mow and sharpening blades is a regular part of monthly maintenance.

[@ericpigg2689]

I am right there with you. It is a great tool!!

[@ATG19534]

I enjoy your explanations and your focus on fair, consistent testing. One thing that would help me as a viewer is a summary chart at the end where you recap the prices and the ranking from each test along with your recommendations.

[@Banditt42]

I use an angle grinder with my foot for a vice. It's a lawnmower blade, not the space shuttle.

[@ebutuoyebutouy]

Me too, but please be careful.

[@skinnybigstuff1040]

Ikr

[@edwardkane3237]

That’s right Taryl !!!

[@Blasterxp]

Do you even remove it?

[@nutsnbolts76]

I wouldn't be able to stand back up if I held a blade with my foot and bent over or squatted long enough to sharpen it. Old Arthur has been hard on me. I use a vice and an angle grinder or a pneumatic die grinder with a course sanding disc. I think I prefer the pneumatic die grinder over the angle grinder.

[@wyckedan]

I was just thinking "Where's the Project Farm" video for this week, and here we are. And something I needed to know too? Can always count on PF

[@ProjectFarm]

Thank you! I never want to let anyone down. My goal is to always post at the same time every Sunday. Thanks again!

[@joshrepik]

@@ProjectFarm you never do let us down!! Been watching for at least 2 years and I’ll never stop!

[@diltzm]

Who else would love to see a video where Todd shows us everything he's bought over the years to test? I'd love to see how he stores it all.

[@Yhrim70]

I'd love to see that video :-)

[@Mostviews111]

I thought he said something about he donates a lot of it.

[@alwaysopen7970]

You would need to call mustie and Derek over to sort through it all.

[@ozzykrahn806]

@@Mostviews111 i think he does

[@b-2466]

Highly doubt he keeps it all.

[@RyzawaCh]

God-tier presentation, no bs no filler no ads, just pure information.

[@ProjectFarm]

Thanks!

[@LLYoutube565]

For some reason, I just love your content. I love how you approach all your tests. You are very technical about it all and it is very refreshing. No yelling - No over-dramatization - Just facts! I love facts!

[@ProjectFarm]

Thanks so much!

[@MrAPCProductions]

Been using the Harbor Freight angle grinder and "fine" flap disc set for 8 years now. They were less than $20 and it takes 30 ish seconds per side.

[@ProjectFarm]

Thanks for sharing.

[@p71collector]

That's exactly what I use! Cheap and effective.... :)

[@acros6653]

Nice thing about HF grinders is they are cheap enough to keep one with a flap disk, one with a grinding disk and another with a wire wheel. Saves hours of work. The flap disk works great on mower blades (using sharpie helps keep the angle consistent.)

[@MrSGL21]

yup $12 HF angle grinder and i use a diablo side grinding wheel rather than a flap disk.

[@MrSGL21]

@@acros6653 yup got that idea from another tuber. everytime he gets a new grinder attachment....he buys another HF angle grinder. had 6 ot 8 grinders in his tool box.

[@v.e.7236]

Noticed the T-shirt - "We're going to test that . . ." Awesome! Looks like I'll be stickig w/ my trusty bench grinder for all of my tool sharpening needs.

[@mikejohnson9118]

1 To check balance (which is a MUST) especially after removing alot of material. You can hang the blade on a nail set into the wall. Then see if if stays level. Flip it over and check again. 2 When using the Oregon sharpener. You REALLY should be wearing cut safe gloves in case the blade "torques" in your hands. Remember you are holding a two sided knife essentially.

[@ProjectFarm]

Thanks for the feedback.

[@big800wildcat]

Except that a blade should not be sharpened to a knife edge. The leading edge should be about .025 thick, squared with the bottom (90 degrees) and, of course, the 30 on the top edge. (exploded view of bottom of edge where vertical line should be .025 in length: l__ Couldn't find a way to type to show the top of cutting edge.) This type of cutting edge will last far longer and not be as easily damaged. Razor sharp won't last long at all.

[@ghostridergale]

@@big800wildcat I bought some new blades for my field & brush mower supposedly already sharpened and ready to be installed. I notice the blades were sharpened as you mentioned. Not to a sharp knife point at all! Which really seemed wrong that it wouldn’t have a sharp knife point? But I guess it does make sense that a blunt edge would hold up longer. Just not cut as well though like a knife sharp blade would. Least till the knife sharpness gets damaged! I have a feeling most people would sharpen their blades to a knife point sharpness too, not knowing any better! I certainly didn’t! But it makes sense to have the blunt edge to keep from getting as much damage on the edge of the blade. Just goes against every fiber in my body not the sharpen the blade to a point sharp enough to split a hair in half! 😂

[@big800wildcat]

@@ghostridergale Technically, that 90 degree corner from the bottom of the blade to the leading edge isn't necessarily blunt. When I used to work for a printer and we trimmed books, the bottom knife was a 90 degree corner yet sharp enough to cut you easily. I have to admit to also mistakenly sharpening blades to a sharp knife edge for about 54 years. Heard about this at the end of last season from Oregon and tried it. The blade cuts as well as a knife edge and lasts far longer before that front edge gets rounded and doesn't chip as easily. It also takes less time to sharpen as one only needs to cut it down enough to narrow the width back to .025. I use a fine file to dress the edges of that front face so the 90 degree and 60 degree corners are sharp.

[@chipsterb4946]

Mike thanks for the nail balancing idea. Seems easier to get it right than that tabletop thingy.

[@hop-skip-ouch8798]

Almost expected him to say, "The All American is made in China"

[@p71collector]

Or made in America with global components!

[@southernstar4353]

same

[@michaelblacktree]

LOL, same here

[@ryane6719]

@@p71collector the new way to hide garbage from china

[@hrsey71]

the all American is made in USA "were gonna test that"!

[@wearemilesfromnowhere4630]

Always, always balance those blades. I like to blunt the leading edge with a hand file after sharpening. Keeps the knife edge from folding over and getting dull too soon.

[@netdoctor1]

Agreed. That razor-sharp edge doesn't hold up very long, as it is weaker.

[@Judahmangi]

Could you test over ear hearing protection (ear muffs)? Decibel reduction, how much they squeeze your head, durability of ear cups, size of 'ear box' (not sure of proper term, basically if your ears will be cramped or not), subjective comfort assessment (for several hours of continuous use), etc.

[@billythekid8201]

Great idea and if there is a difference with wearing eye protection. Mine make a slight gap with over ears pro when I wear eye pro.

[@Judahmangi]

@@billythekid8201 Good point!

[@carsonhart2536]

Great idea I hope he does this

[@sf7708]

Best hearing protection is what shooters call “double bagging”. Basically some foam hearing protectors under a headset. You won’t get hearing leaks wearing eye glasses if you do this.

[@jeffalley4417]

YESSSSSSS

[@PapaA7145]

I bought the All American 5005 about a year ago after watching this test. It is very easy to use and really sharpens my mower blades without any problems.

[@ProjectFarm]

Thanks for sharing.

[@ericpigg2689]

Man I still love mine after about 2 years.

[@williamdavis4542]

One thing I never see mentioned is that the very tip of the blade does almost all the cutting. Since blades have two cutting edges, at 3,600 RPM, that is 7,200 cutting edge passes per minute. To mow fast enough to advance the blade that 4 inches forward with every half revolution, you would have to "walk" at 27 MPH! This is why you always find the most wear at the outside corner of the cutting edges. I bet most people don't pay that much attention to getting that corner really sharp, but that's where the action is. You would have to grind off a lot of steel to get right down to the corners. I generally grind a radius at the those corners. Plus, I grind a small amount off both ends of the blade so the radiused cutting edge meets the end of the blade at a sharp corner.

[@Jethro.Maloku-le.Rey.Kalsitran]

best remark ever 👍

[@matambale]

Given that most of the work is done at the outermost edges of the blade, as you mentioned, I'm surprised that the end of the blade is at 90 degrees to the body. I'd expect that it'd have a curved profile, or at least a 45 degree angle at the end, to present more sharpened blade in the area where most of the cutting is done. Something like \| instead of |_|. I suppose though that the end would be structurally weaker and tend to break off when encountering our nemesis: the hidden stone.

[@Jethro.Maloku-le.Rey.Kalsitran]

@@matambale if you encounter rocks big enough to break your blade, you should quit Stonehenge with your mower...

[@paulhunter9613]

@william Davis You can take a little off the ends of the blade if it is a single blade mower, but if doing that on a rider with 3 blades you could possibly not have enough overlap with each blade by making it shorter at each sharpening. That’s what they told us at the Belsaw sharpening school. My .02

[@LS-gv7pn]

Scag dealer says blades run at 19200 rpm

[@mazeppaunitedmethodistchurch]

I’d like to see a video of blooper outtakes. I’ve never seen someone who can speak so fast and so clearly while describing the tests. You have a great channel!

[@boraboyvr6]

I been using the bench grinder for like 8 years without worry about the “30 angle” and I don’t see any damage to my grass! Still growing green, healthy and nicely!

[@ProjectFarm]

Thanks for sharing.

[@JohnDoe-pv2iu]

I'm a side grinder kind of guy, works good and quick and I already own a couple of them. So the blade is supposed to be a 30 degree angle?... I have a bench top tri-hone for Ideal knife sharpening but lawn mower blade sharpening isn't something I'm 'into' enough to buy a bunch of toys for. My grass keeps growing, as well, and doesn't seem to mind how I sharpen my blades. I know you spent time and money to make the video so I gave a like and comment to help the algorithms. Yall Take Care and be safe, John

[@lobbyrobby]

When he said "30 degree angle" I thought Oops!! When he said "without overheating the blade" I thought Shit!!! I grind the hell outta my blades lol

[@garebear246]

I use a bench grinder...when I can't get it any sharper, I flip the blade and hit the grass side 'till I'm scared to run my thumb down it.

[@andres.96]

Yeah we usually just use a angel grinder and it works just fine without any guiding arms

[@stansturdevant4306]

Never had a problem eyeballing the angle pretty accurately by hand with my angle grinder with sanding flap discs. Super sharp blades everytime. Follow the stock angle on the blades, not too difficult

[@ProjectFarm]

Thanks for sharing.

[@marklarimore257]

Have the All American with all the bells and whistles. Love everything about it and worth all the money.

[@ProjectFarm]

Thanks for the feedback.

[@stephenkohler3472]

I bought the All American for my landscape business after watching this. I've used the Oregon and the vice & file method before with good results but this was a night and day difference in performance. The blades looked amazing and cut WAY better than I've ever experienced. I think the convex edge actually reduces drag/turbulence of the blade.

[@Rhuidian]

I was thinking that with a landscape business that tool might pay for itself with several machines to work on. Joe Shmoe here cutting his own lawn would be better off buying new blades when it gets to that point.

[@ericpigg2689]

@@Rhuidian Idk man, the blades for mine are almost $60 a set. If I bought new blades every time they got dull, I could by the All American on about the third set. I normally sharpen my blades every 20 hrs, and I can get 6-10 sharpens on them before I replace them.

[@timberwolf2543]

@Jesus is coming. Read the Gospel. Absolutely! May God bless you.

[@jayr526]

@Jesus is coming. Read the Gospel. Would he cut my grass if I called on His name? Or maybe just do a miracle and have it looking like a golg course?

[@FlyGuy2000]

@@Rhuidian Joe Schmoe here, I've always just used a bench grinder. It's quick and you can use the bench grinder for a lot of other things, too.

[@Followthelemming]

How about High Temperature spray paint, either color, clear or both. Some claim 2000 degrees or more. Thank you for the great content!

[@ProjectFarm]

You are welcome! Great suggestion! Thank you.

[@jdsstegman]

@@ProjectFarm I too would like to know about high temp paints. I have tried a bunch and none I have tried hold up.

[@boobtubeakatv1296]

Soak blade in a bath of MotorKote for 2 days... Wipe off and it'll stay clean and sharp for 3 seasons 😳 The paint would be just scraped off by the grass

[@joelucero6703]

Been using all American for 2 years and used it today. It works so well. Exact angle and the ease is marvelous.

[@narlycharley]

I free hand a 4-1/2” flap disc on an angle grinder and it works perfectly.

[@stevehammerich7121]

Yep I do almost same thing, made a jig to set blade on and it keeps right at 30 deg.

[@onebackzach]

Yup, that's exactly what I do. I take the bur off with a fine tooth file afterwards too, since I think a heavy burr is more prone to damage

[@ctsean]

this is what I do - then de-burr the back side with a light flat grinding with the same disc. i don't care about my lawn anywhere near enough to invest more than that into blade sharpening.

[@sundstrom193]

I feel the All American would be a great choice for someone starting out a landscaping company. $200 is a little pricey but it saves lots of time, and you can keep it on a trailer for sharpening on site. I think it would be best for landscaping businesses

[@endutubecensorship]

Bingo, exactly what I was thinking

[@assassinlexx1993]

We have lots of extras blades.

[@seriouslyslinky1420]

Always buy American.

[@assassinlexx1993]

@@seriouslyslinky1420 Unless it is crap. A cheap angle grinder from Harbour Freight. Is all you need.

[@malice6081]

@@assassinlexx1993 I mean buying japanese also ar great as they know how to build things. Great cars that last forever.

[@gumps1986]

You know what I was doing yesterday? Mowing my lawn. You know what I was thinking? My blades need sharpened. Here we are.

[@ProjectFarm]

Great timing!

[@andyxox4168]

‘My blades need sharpened’ … where did ‘we’ go to school?

[@GunRunner3]

Just FYI: I always appreciate the time and expense you put into your very informative videos.

[@ProjectFarm]

Thanks so much!

[@jeffreykiszer5239]

Congratulations Sir on one of the best tool and equipment test channels on the internet. Your unbiased and truthful tests and results are a refreshing experience . I thank you for your time, ingenuity, and patience to come up with the ideas and put the tests together. 1000 thumbs up.

[@ProjectFarm]

Thanks so much!

[@jonbar140]

Oh man, I do this once a week with an angle grinder. This video is probably going to save me time and money...

[@ProjectFarm]

Thank you and hope the video helps!

[@Initial_Gopnik]

How long does a blade typically last before you have to get a new one? Are there more durable blades that can hold up to being used and sharpened routinely? If so which do you prefer?

[@Tb0n3]

Are you Hank Hill? Do you measure your cut with a micrometer? Once a week seems way overkill unless you're mowing sand and dirt a lot

[@jonbar140]

@@Tb0n3 Or if you have a landscaping business lol

[@joshrepik]

@@jonbar140 that was my first thought, you’re gonna sharpen a lot if you mow a lot. Keep that garden hose handy!! People don’t realize how nice your mower will stay if you spray it out after each use

[@draderman]

I dont know if anyone has askedfor this before, but id love it if you would do aviation snips. theres so many brands and so many big promises on the packaging lol. thanks for your videos!

[@ranger178]

klenks red handled offset for strait and tight circles cut hard stainless sheet metal never gets dull

[@Propaneo-insaneo]

I work at a sheet metal sign company, Midwest snips are the best we have ever found.

[@draderman]

Now that ive given it some thought, im not sure how the heck you'd even build a rig to test these. a durability test yes, but testing performance? you would need a rig that could both hold and squeeze them open and closed consistently, and then, somehow, build another rig to feed the sheet metal into them?!?

[@tbirdpimp07]

I tend to use old snips I find at antique malls they cut better than anything made now just take up more space

[@christopherdecker8171]

So far I've found Malco Aviation/Andy snips for larger ones, and Wiss for small work the best. I do want to try the new Milwaukee ones, and curious if there are any that are currently better.

[@Limicola1]

Excellent review! Thanks! I use a 72 inch x 2 inch belt knife grinder for mine. I always sharpen my blades to a convex edge. The convex grind is the strongest grind at a given angle without a secondary bevel and is better at resisting chipping.

[@mshort7087]

I’ll keep doing it the way Carl did in Slingblade. Solid bench vise and a Nicholson file. Sharp enough to split Doyle’s gourd👌

[@IBEONECOOLCAT]

🤯

[@natethegr8230]

Unh hunh

[@jwagnermail]

After I sharpen my blade, I eat some French Fried Potaters. Uhh-Huuh.

[@IBEONECOOLCAT]

@@jwagnermail do they look like lil waffles....but still taste like taters?🤔

[@emotionz3]

I’m happy to see you mentioned balancing the blade at the end. That’s super important. You will never evenly remove material from a blade (especially if there are rock chips) and an unbalanced blade will rip your mower apart.

[@ProjectFarm]

Thanks for the feedback.

[@bunzeebear2973]

I just put string or wire or nail through the hole and see if the blade has a HEAVY END. COST of string or wire or nail=free.

[@jean-pierredejon7458]

Blade balancer. Could this be a project farm test?

[@999thenewman]

Good work, Project Farm. It's also important to ensure the grass side of the blade edge is flat. It's part of what maintains the consistent "lift" when shearing grass. I clean that up with a hand file.

[@ProjectFarm]

You are right! Thank you

[@vtxdaryl]

I am constantly amazed at how you buy all these products yourself and then come up with different ways to test the products. Don’t get a big head but you are amazing.

[@ProjectFarm]

Thanks!

[@davidcurnutt9584]

I love my all American sharpener because it was the only “professional” system that takes the tool to the blade instead of taking the blades to the tool. It’s consistent, durable, and exacting in its repetitive sharpening procedure.

[@ProjectFarm]

Thanks for the feedback.

[@glenhoulditch5105]

All American is the best and quickest I have ever had.

[@TorqueSpike40]

Yes sir, I have the adjustable angle model and it is Fantastic. Worth every dollar.

[@zimway57]

I purchased the All American model that does the two edge mulching blades. It didn't seem to work for the John Deere blades I had. I had difficulty getting the blades to 30 degrees. I think the curved blades from JD must not sit flat on a surface which is recommended by AA. I wish I purchased the fully adjustable model from A A. The system worked well on my straight blades.

[@davidcurnutt9584]

@Elmo Sherman I do 150 in a season or so. I am a flipper and a mechanic on top of having a full time job.

[@SMOBY44]

I've always had good results with holding the blade in a vice and using a grinder with a flap disk. Always follow up with a file. Might just get me one of those All American tools.

[@ProjectFarm]

Thanks for sharing.

[@littled6698]

@SMOBY44, I bought a 5005 All American after this, and I had sharpened a set of Gator Blades with a flap wheel in a vice, and this was 1000% better.

[@SMOBY44]

@@littled6698 Thanks for the input.

[@Forbes123]

Same. Quick, easy & effective.

[@davidgiffordsr.930]

Oh, yes, I finish with a file as well. Thanks

[@derekpeevey792]

After having used the Oregon one in a professional setting I will say that turning the unit sideways is much better. Pulling the blade works much faster and more pressure can be put to make the process faster. I have fixed many blades I thought past fixing with that one.

[@ProjectFarm]

Thanks for the feedback.

[@ScoutSniper3124]

About once a month in the Spring & Summer (when the grass is growing) I pull the mower blade and swipe its cutting edge a time or two with a good Mill File. Total process takes a couple minutes at most. That includes setting its balancing point on a piece of round bar to ensure it's still in balance. Mill File beats all the other "Specialty Tools" on the market in my book.

[@ProjectFarm]

Thanks for sharing.

[@444chroma]

I currently just freehand it with my angle grinder and they come out pretty decent. If I wanted to do a better job I'd purchase the All American system to improve my consistency.

[@hickoryhillangus]

Bench vise and a grinder done it professionally for 4.5 years as a small engine mechanic.

[@ProjectFarm]

Thanks for sharing!

[@0Somerandomguy01]

Free hand with a flap wheel (80 grit) works extremely well and has served me for decades sharpening 21 blades every 4 days. For the record: blades are not ground at the factory, the OE edge is milled. If you have a bench top mill and a fly cutter you can restore the edge to factory.

[@ProjectFarm]

Thanks for the feedback.

[@barrybaldwin5535]

Thanks for taking the time to scientifically evaluate these sharpening tools. Your time, work & logical approach will save me much time. I'm 72 now but I used to work for a machine shop & used a vertical 4" belt grinder for my blades. I dragged the blade edge across the top pulley, perpendicular to the axle of the pulley, which gave me a flat grind.

[@ProjectFarm]

You are welcome!

[@73honda350]

I've tried something similar to the drill mounted unit but always went back to just using mill bastard file by hand. Slower but effective and simple. Also, good for dealing with chipped blades because I can flatten the back of the blade with the file, and remove any burrs.

[@ProjectFarm]

Thanks for the feedback.

[@duncanbrown7082]

I’ve been wanting an All American for a while now. This wasn’t even a close contest.

[@ProjectFarm]

Thanks for the feedback.

[@scottf6604]

I'm a fan Purchased 3 yrs ago. Great investment. Always a spare set ready to install. Go for it!

[@briantomes2564]

I have one bought it this spring and love it

[@FromThe3PointLine]

You don't need a all American tool. Just put your bench grinder at 30 degrees and send it. You'll be wasting your money

[@briantomes2564]

@@FromThe3PointLine I got to bench grinders I like the all American sharpener way better

[@erictheberry]

Perfect timing. I was about to order a new blade as my mower has been performing poorly. Thank you!

[@ProjectFarm]

Glad I could help!

[@stu7544]

Greetings from Calgary, Alberta, Canada. I bought the All American Sharpener for my small lawnmower repair/refurbishing business. Without question, it has enabled me to sharpen blades better and faster than using my bench grinder. Even though at first glance it may seem a bit pricey, especially by the time the exchange rate is calculated in, I am glad I decided to go with it. Highly recommended.

[@ProjectFarm]

Thanks for the feedback.

[@alexaltrichter1597]

I have been using the old bench grinder for the last 50 years , l think I'll stick with it !

[@ProjectFarm]

Thanks for the feedback.

[@TruthHurts2u]

That works fine at home but in my shop I prefer to use a sharpener for consistency.

[@alexaltrichter1597]

@@TruthHurts2u yes I get that. The way some of these new mulching and high lift blades are shaped it becomes nearly impossible to sharpen them at all. Most often the back of the blades wear to thin to bother with.

[@dirtroadsailing6418]

I'll stay with my bench grinder. Mine has a bottom guide that can be adjusted for angle if I really wanted, but we're just mowing grass here, so sharp and close enough is good enough for me. Thanks for the review!

[@ProjectFarm]

You are welcome! Thanks for sharing.

[@Watchyn_Yarwood]

You got it!

[@albertkarr2942]

Have you ever considered testing out "Fire Safes" just to see if they actually protect the valuables inside of them to the temperatures they claim?

[@ProjectFarm]

Thanks for the video idea.

[@cdgregOG]

That's a great idea

[@rickydobbs9671]

Would be very interesting.

[@ohger1]

I think a trip to the mortuary with a truck full of fire safes would be a hoot..

[@KamalasVACANTwomb]

None of them will.

[@mattsmith6828]

Awesome video! I went with the All American (5005 model). I figure I'm not a knife sharpener expert and I want to keep my push and riding mower blades sharp. I feel that spending the money and only having to spend a couple minutes sharpening my blades will also encourage me to actually use it more frequently. If something is a pain in the butt to use, I've found that I don't use it much, if at all. Keep up the good work!

[@ProjectFarm]

Thanks, will do!

[@LetsGo6009]

@@ProjectFarm Definitely a category you could add to your reviews is "ease of use" for the various tools. Its obviously more subjective but he's totally right, if a tool is a pain to setup or use than its going to collect dust in the shop.

[@sshyshy6097]

An idea that will help everyone is "what degreaser is best for removing oil stains"

[@carsonhart2536]

Purple power for sure

[@bhough410]

Was just thinking about this today! Hoping he covers multiple uses not just one or two types of grease. I regularly use them as a heavy duty all purpose cleaner when soap won't cut it. Noticed "Easy Off" brand didn't do any better of a job than rinsing in water for rattle can primer on my finger, while Zep brand spray bottle had my finger spotless with one simple spray & rub. For removing adhesives Zep foaming aresol can seems to be superior to Zep spray bottle. Would be interesting to see what works best for internals on a heavily used grill & maybe something like a few types of automotive fluids on a couple different types of common workbench materials. No question brake or carb cleaner would top degreasers in most apples to apples comparisons. Both brake & carb cleaner are generally high pressure cans which are often wasteful and can be costly to regularly use as a heavy duty all purpose cleaner.

[@ProjectFarm]

Thanks for the video idea.

[@MegaHugro]

Formula 88, and it doesn't remove the adhesive from electrical tape used to wrap wires in the engine compartment

[@jeffdavis6657]

Awesome from the dollar store.

[@twestgard2]

Apparently, there’s a set of people who think a LOT more than I do about having a straight sharp lawnmower blade. I occasionally zip the edge with a grinding wheel. I don’t even take the blade off the mower. Works fine for me

[@HappyHands.]

I think a lot depends on location. down near the coast, with all the sand and sand spur grass, the blades go dull really quickly

[@twestgard2]

@@HappyHands. good point, and of course some people manage golf courses and run mower repair shops. So depending on circumstances I could see the use.

[@Samlol23_drrich]

i Jack up the front of my turf tracer and hit the three blades with my grinder while lying on my back. 30 degrees?? the closest my blades come to that is in the winter. works for me too

[@bhough410]

Do you worry about your blade being out of balance?

[@twestgard2]

@@bhough410 I’ve never noticed any problems.

[@speedwayaudio3]

Years ago, I worked in a lawn mower shop in Florida. We had about 50 commercial cutters bring in their blades 30 or 40 at a time. I made 2 dollars a blade and the boss made a dollar. I would sometimes spend a whole day just doing the blades. I would balance them as well the customers loved my work. The best part was I was 40 years younger. BTW a nail in the wall will balance your blades just as well as one of the balancers and costs almost nothing that is what I used back in the day.

[@ProjectFarm]

Thanks for sharing.

[@scottyellis3442]

WOW, 2 dollars a blade? I can see how you could make some good money especially working in the right place "as you were". I also use the nail method & have for many years.

[@Norm100ful]

Great comparison of blades sharpening equipment. In 1975 I was a young lawn mower mechanic. We just used a bench grinder and guessed at the angle. I still sharpen my blades the same way for personal use. I replace the blade before removing up to 3/16 in from the width. I also use the same, plastic blade balancer you showed in your video for over 30 years-it still works!

[@ProjectFarm]

Thanks! Thanks for sharing.

[@SoloRenegade]

I use a hand file and re-sharpen every ~3 mows. Takes 15min tops and I remove less material between each sharpening. I have 2 blades that i continuously swap out.

[@ProjectFarm]

Thanks for sharing.

[@WisconsinEric]

Same here. The owners manual for my '91 Toro Recycler w/ Suzuki 2-Cycle recommends sharpening with a hand file. Keeps the steel cool with zero chance of ruining the temper of the steel, thus keeping the blade sharper longer. Power tools can destroy the temper if one is not careful and the steel is overheated.

[@1pcfred]

It depends on dings how much material I need to remove. I have a stone driveway and catch the edge of it. It's 340 feet long so it's going to happen. What's not going to happen is me weed wacking it all. Sometimes I do some of it. But all 680 feet of edge? Yeah not gonna happen.

[@itzcyclops306]

I've learned when using a disc grinder or a bench grinder find the correct bevel with very light pressure then make your first pass with firm pressure to hog off the worst of the nicks and get down to the the edge quicker. Once the blade is warm you cannot use much pressure or the edge will get annealed. If you see blue/black discoloration you are looking at a soft edge. I also put a fan on the blade to keep it cooler and often will just let it rest for a minute between the sets of light passes.

[@somaday2595]

How about using an oil or water bath for cooling the blade and quenching?

[@paulhunter9613]

That’s what I do, have a bucket or small container of water about 5” deep. After 4-5 light to medium passes on my stand bench grinder I just dip it in the water for 4-5 secs and resume grinding, I never have a problem with blueing of the edge

[@Thesupperals]

That "All American" is amazing. I'm definitely buying one of those to keep any blade sharp.

[@ProjectFarm]

Thanks for sharing.

[@marceloevera2009]

@@ProjectFarm have you ever heard about adding 1 ounce of diesel for every gallon of gasoline as additive? old timers claim it lubricates, cleans injectors and gets more mpg...

[@MrJamespeyton]

I’ve been using a Dremmel with a attachment made specifically for mower blades. Only takes about 10 minutes per blade. I also use a blade balance tool to make sure that the blades are in balance which will reduce vibration on the mower. I’ve been using this method for the past 20 years. My lawn looks great and the mower cuts through heavy grass with ease.

[@ProjectFarm]

Thanks for sharing.

[@randybrawley]

4" angle grinder and a vise is all you need with a little practice.

[@ProjectFarm]

Thanks for the feedback.

[@ikilleditwithfire]

I've been doing that for years. It's how the city's parks departments sharpens the blades of their 100 or so lawnmowers, from small push mowers to tractor pulled tri-deck mowers.

[@FL.Cracker]

I just use my bench grinder, tried and true

[@davidhenri2722]

Angle grinder with a flap wheel. Will never use a grinding disc again.

[@jorgecardoso1161]

I just use a hand file

[@demonslayer6163]

I find an angle grinder and a steady hand does a fine job.

[@ProjectFarm]

Thanks for the feedback.

[@BillyBob-fd5ht]

I've always used an angle grinder,

[@demonslayer6163]

@@ProjectFarm keep the videos coming, I love them.

[@kevina4674]

A battery powered angle grinder and the all American sharpener and you can sharpen anywhere anytime and be perfect no matter who uses it!

[@happycamper6352]

I seem to be the person that friends/family members/neighbors go to for sharpened blades, and although I used to use a bench grinder (with an adjustable ledge somewhat similar to the Oregon in this video), I found that simply putting the blade into a vice and free-handing an angle grinder does the best job quickly without overheating the blade too easily. If you see dark spots on the blade or blue-ing, that's a sign that you overheated the blade. These spots will crumble to look like rock chips and then you have to remove much more material to get rid of those spots. Bench grinders often cause this problem, but somehow, it's more avoidable with a handheld angle grinder. Many light passes are better than fewer harder passes. Steady speed and consistent angle will make excellent blades. I'm glad Project farm mentioned the overheating issue, as this is a real problem. I'm also glad that he demonstrated the age-old problem with the worthless drill attachment. They failed 50 years ago and they continue to fail today. Thanks for the video, Project Farm.

[@steamygrave]

Love the All American. I sharpen 9 blades a week, takes less than 5 mins. Worth every penny. The 5005 model lets you choose several different angles, which is great for me because I run nothing but Ferris and their angle is 35 degrees.

[@ProjectFarm]

Thanks for sharing.

[@glenhoulditch5105]

Agree. You can have the best and quickest or buy something else

[@SynchronizorVideos]

Awesome comparison as always. Just to give folks another option, many hardware stores will offer lawnmower blade sharpening as a pretty low-cost service. Probably not the way to go if you're a professional landscaper, but for the average suburban home with a small- or medium-sized lawn that's free of rocks or other rough stuff, this can be a lot easier than spending the money on specialty tools that will rarely get used. I get my blade sharpened once every year or two; I just drop it off and they call me when it's ready to get picked up again. Only costs me $10, and that price includes an extra charge because my blade has four cutting edges.

[@ProjectFarm]

Thanks! Thanks for sharing.

[@jaysheldon6443]

I bought the all American earlier this year. Hands down the best for me. I love it and it works great. Great review as usual.

[@ProjectFarm]

Thanks! Thanks for sharing.

[@dwarfism2801]

Just a big, big thank you for making these awesome videos. I imagine there are a lot of new-born homeowners who these videos are helpfull for. Even I use the comparison videos myself, for deciding which tools or accesories to buy. Thank you.

[@ProjectFarm]

You are welcome!

[@TwoTreesFarm]

How did the blades do when cutting grass? That seems like the real test here.

[@eriezaccord]

Agreed 100%

[@ProjectFarm]

Thanks for the suggestion.

[@uuzd4s]

I'm glad you finally mentioned Balancing these simple Lawn mower Blades, it's just as important as getting them sharp, if not more. Running a single blade mower w/ an unbalanced blade will eventually cause something to vibrate loose or crack the mower decking. I ran a Small Engine/Lawn Equip Shop in SW Oregon for several yrs and have sharpened my share of mower blades and chainsaw chain. Once the "top" of the blade has been sharpened sufficiently, you can put a grinder/sander or file to the underside and remove the "burr" that's often left behind. Giving a slight angle to the bottom side edge works fine & helps to give the deeper "rock dings" an edge to them as well. It's easy to soften the blade steel by overheating while sharpening. Quenching a Hot finished blade will harden the metal a bit and give a longer lasting edge, while "de-tempering" the blade by getting it hot and letting it air cool has the opposite effect.

[@ProjectFarm]

Thanks for the feedback.

[@uuzd4s]

@@ProjectFarm Always enjoy your productions. Every time I try to think up something new within the "handy man's" world of tools & equip that I'd like to see tested/compared, you've already done it, and done it well ! Thx

[@ThePrufessa]

What in the world do you do with all the equipment after your tests are completed?!?!

[@DedaLGaming]

Keep the good shit. Sell the other shit. Either he gets these products for free, or writes them off as a business expense for tax purposes since they're used as a demonstration in this youtube video. Pretty solid business model.

[@valchris11]

He can donate some to me

[@hagan92]

He donates things to various local charities

[@zachaliles]

@@DedaLGaming I'm not sure what he does with them after the videos but I do know he says he buys everything with his own money. That way he's not biased by any generosity from companies.

[@Hoaxer51]

If this KZbin thing doesn’t work out, he can always go into the lawn mower blade sharpening business!

[@cdgregOG]

Wow, I didn't even know this was a thing, I always just angle grinded them and prayed. Great to know, thank you.

[@ProjectFarm]

You are welcome!

[@Rudy97]

I never spend too much time getting the blade perfect, the ground has a lot of sand in it and dulls the cutting edge. Just get it sharp enough and don't worry about getting it nice 30 degrees perfect.

[@ProjectFarm]

Thanks for the feedback.

[@deeeeeeps]

I agree...it also wears out the top of the blade which is there to create a vacuum to pull the grass up and once the blade is worn out on top its worthless.

[@1pcfred]

Really just the tips of the blades cut anyways. If you think about it. It's maybe the first half of an inch? That other few inches we sharpen for who knows what reason. I guess because it looks good?

[@danieljones317]

There are self-sharpening lawn mower blades, especially for places with high sand content in the soil. They are used a lot in Florida. The lower surface of the blade is hardened, and the rest is normal temper. Expensive, but worth it in those conditions.

[@1pcfred]

@@danieljones317 I've heard of those blades. I've also heard they don't work as advertised. Last time I checked hardened steel can be abraded by sand. May be more wear resistant than mild steel is but it is hardly impervious. They may last twice as long? Really what the sand does to my blades is it literally frays the ends. These deep vee grooves get cut out of the blades. Hardening won't help that out any.

[@jrmz]

I've always sharpened my blades with a file by hand with decent results. My Honda mulching blades are $30 a pair, so rather than getting a $200-300 tool I would get new blades if they get too rough.

Same here, also my ryobi blades are _bent_ so would not work in many of these!

[@TheFeller1554]

I was thinking something similar. For the average person the all American or Oregon would never pay for themselves. These would be something a repair shop or a lawnmower dealer would have.

[@ProjectFarm]

Thanks for the feedback.

[@1pcfred]

New blades usually aren't that sharp. They're not dinged though. But they certainly could be sharper.

[@brutebetter9188]

Angle grinder with a 1/4" wheel, grind each side with the same passes. Replace blade if bent or edge is broken > 1/4".

[@ProjectFarm]

Thanks for the feedback.

[@KM-os4be]

I had good luck just using a corded 4 1/2" angle grinder with 4.5 Inch Flap Discs in 60 grit

[@ProjectFarm]

Thanks for sharing.

[@ljprep6250]

Some of those prices are CRAZY! I wedge my mower handle under the kick in the mower house and hit the two edges of the blade with the angle grinder and am back mowing in five minutes. RE: The Work Sharp, you could have used the coarser belt on the dullest blade to quicken sharpening, and it makes no difference whatsoever (OK, 0.01%) if the edge is convex or concave if both have 30 degree edges. I'd be willing to bet that the vast majority of us use the 4" angle grinder still, even after seeing this wonderful video.

[@ProjectFarm]

Thanks for sharing.

[@TRG972]

Excellent video topic - Thank you! For now, it's the angle grinder, 36 to 60 grit flap disc and vice. Will probably end up getting the All American Sharpener in future though.

[@ProjectFarm]

Thanks! Thanks for the feedback.

[@genuinepolyester9445]

I would love to see a best digital calipers video since there is such a price and quality gradient, your videos are very helpful.

[@ProjectFarm]

Great suggestion! Thank you.

[@Doomzdayxx]

Jeez. That's some seriously over-thought, bloated technology for a task that takes about 15 seconds with a bench grinder or 2 minutes with a file. that's not a knock on this video, just the equipment.

[@georgeorwell126]

A rasp? Really? Do you mean a file? Do you know what a rasp is?

[@WillBravoNotEvil]

@@georgeorwell126 Not tested: a cheese grater. 😄

[@ACitizenOfOurWorld]

That's a seriously under thought comment. Doubt anyone can reprofile a mower blade with a "rasp" especially in just 2 minutes.

[@ProjectFarm]

Thanks for the feedback.

[@Meekerextreme]

I know right! It's grass not the end of the world to have it perfect.

[@noahchildress9547]

You are my favorite KZbinr. Quality honest content

[@ProjectFarm]

Thanks!

[@hrsey71]

some would say the all American "cut through" the competition! looks like you could make that jig for your grinder pretty easily and much cheaper

[@ProjectFarm]

Great point! Thank you

[@nobodyspecial7340]

Yep. Handy little jig, but for what you get I'd expect it to be priced south of a hundred bucks.

[@hippopotomerjones8746]

Farm Daddy:"Please leave a like" Me: "We're going to test that"

[@ProjectFarm]

Thanks for watching!

[@Vitz3001]

I just use a cordless Dremmel with a sanding drum attached. Don't even have to take the blade off of the mower

[@originalfred66]

Dremel handy grinder works well for me also. I do take the blade off, and it takes me about 30 minutes from start to finish once per year.

[@jimimacsheen4662]

Exactly

[@ShawnDickens]

I have to do mine every 3 or 4 times mowing, so off with a grinder and i have several set of blades that all need to be sharpened right now. Ugh.

[@allanwind295]

If you don't remove the blade then you can't ensure it's balanced.

[@Vitz3001]

@@allanwind295 that's true. I did try to remove the blade once, but the manufacturer put the nut on so tight that I couldn't get it off with an impact wrench. It's electric, so I would definitely feel vibrations if it got out of balance and so far it's good.

[@larsbliss2728]

Bench grinder and blade balancer. I worked on lawn equipment for extra money when i was younger. I sharpened blades for a friend of my brother when he was in a pinch. After using them he wanted me to sharpen the blades for all his commercial mowers. A secret I learned from an old ww2 vet that was into knife making.