How To Quickly Sharpen A Lawn Mower Blade (With An Angle Grinder)

[@BriansLawnMaintenance]

What’s your guys technique for sharpening blades? Flap disc + grinder? Something else? Lmk 👇👇

[@conorsmith5471]

Thanks for the reminder and kind of push to take care of some snow upgrades now before all the salters are sold and mechanics are booked. Just brought home my new in bed salter, taking it to another level this year salting some private roads. Leaf canvas scheduled for install next Monday! Lets get it!!

[@gamerfarms9362]

bench grinder

[@conorsmith5471]

I put them flat in my vise and use the angle grinder with a flap disc. First pass under, one to two passes on top and a little clean up under pass to finish. Sharpness test is if it easily peels a fingernail

[@BriansLawnMaintenance]

@@conorsmith5471 that’s awesome man, congrats!

[@robertlutz669]

Hmmm are those Ballard blades? Lol Interesting

[@jonathanhanek2812]

8 years ago i taught my son lawncare/landscaping. last month he came home and taught me to sharpen blades with a flap disk. A Polish friend of mine saw the all american sharpener and said he can duplicate it. I bought that prototype off him and call it the "all polish sharpener". Kinda funny how it all works. I don't think I would be who I am without all the great people around me

[@garyalford9394]

You are living in a perfect world ! most blades I get look like they have been chewed on by a bever !!

[@ThermoCoupleNZ]

nothing wrong with getting chewed by a beaver :-)

[@reidgleason7862]

Love the grinder flap disk combo. I use it with the all American sharpener and it's perfect edges every time.

[@Piccyman1]

Excellent, I just went into 5he garage and sharpened 6 blades, worked a treat 👍🏻

[@SeahawkAz]

I like the All American sharpening jig using 40 or 60 grit flap disc

[@Tony-dx3eo]

Definitely one of my preferred methods for sharpening mower blades...but mulching blades are definitely trickier to perfect with this method due to the curvature of the blade.

[@dlkline27]

This is by far the best way I've found to sharpen blades without some kind of expensive jig. It wouldn't be effective for badly chewed up blades but if you're not into mowing rocks, give this a try.

[@kennethcastaldo7239]

Love watching you Spencer lawn care lawn care juggernaut and blades of grass

[@Methodical2]

I've found it easier to sharpen and keep the blade angle by placing the blade at the bottom of the clamp with the blade perpendicular to the ground.

[@briannelson6259]

I Really Like The Setup 👌 For Touching Up Mower Blades ! That Seems To Work The Best. For When You Are Far From Home 😁 Thank You For Sharing 👍

[@MattLancasterSC]

Hey Brian I took your advice last year and got an All American set up. And now you backed out doing it the cheaper way.

[@fiouable]

Worth watching just for the board. Thanks

[@MikeAcousticMusic]

Thank you😊 First time and tips are gold!

[@WerezerRoo]

Wow i been using the weong blade disc all this time 😮

[@mikegto65]

I personally like using my belt sander...keeps it flat and straight

[@paulgalus7063]

Great video! We're going to try this method!!

[@MrAirtaz]

Good stuff. Nice work on keeping that angle.

[@meegstomtom]

Basically the same set up I use. Flap wheel, cordless grinder. Been working great for 3 years

[@mannyc805]

What grit do you use?

[@meegstomtom]

@@mannyc805 80 grit

[@mannyc805]

@@meegstomtom thank you 🙏

[@meegstomtom]

@@mannyc805 any time. I feel 80 grit is fast enough but still makes for a clean smooth edge. And doesn't heat the blades up

[@meegstomtom]

@davejenkya usually 80 grit. Fast and clean.

[@mikeskoczylas1571]

i always thought i was pretty good at sharpening blades with a grinder (when i was using a grinder- i had better luck using a grinding wheel over using a flap disc.) but i HIGHLY recommend getting an actual blade sharpener. no matter how good you think you are at getting that 30degree angle with a regular grinder, your not. and its way faster using an actual sharpener. get the rbg 712 OR the all american blade sharpener- you still use a grinder using this device. i use this if i have to sharpen a blade out on my route (it can be used mobile) i use the rbg in my shop. the all american sharpener takes a second to get set up the first couple times of using it, but once you get it dialed its an excellent unit. i also reccomend changing the grinding wheels every few blades you sharpen depending on how much the blades need to be sharpened (when using the all american sharpener)

[@DistrictFire]

A machinist taught me to never remove the backside burrs with the disk, use a flat file and “ back draw” them. Love the Dewalt

[@nostaw3489]

True story

[@brentotto6193]

What's the benefit of file vs disc?

[@gss6531]

@@brentotto6193 To remove the burrs, a disc is WAY too aggressive, you just gently file them away.

[@urrigongreyjoy]

​@@TheR00k1e2 Pulling the file towards yourself, as opposed to pushing away.

[@bnorby213]

Floppy is just fine , just don’t be retarded

[@glendajune9140]

Looking like a professional, sharpening those blades! Good job Brian.💯❤️👍🏾😀🙋🏽‍♀️✝️🙏🏾🇺🇸

[@brucerichardson5647]

That's all I've ever used is a grinder and flap disc. Doesn't take off as much material as a grinding wheel and make them sharper.

[@Corkoth55]

Wow that intro song. Surface by Aero Chord. Haven't heard that in years. Very nostalgic.

[@kennethlemke9826]

Excellent idea

[@neoc03]

Trick for balnacing blades when you don't have a balancer handy. Put a nail in a vertical piece of material and hang it from that. The heavy side will fall. It's not perfect, but it will get you very close.

[@mrbmp09]

Not accurate at all.

[@gerrymcintosh4477]

I prefer to sharpen my blades by hand. I don’t take off as much metal this way. You did a fine job though and I appreciate this video.

[@12namleht]

I use a belt sander for all our equipment with blades

[@themowingmentor]

Plumber Joe knows what is going on 😉👍

[@fiftyoon]

Great video. With the All American Blade Sharpener, did you prefer using T27 (flat face) or T29 (angled face) flap discs? Thanks!

[@excessivepotassium]

It's a lot quicker and a lot easier if you remove the guard from the angle-grinder.

[@brianherron5400]

That's the way I do it and it works great 👍.

[@aquaclean]

Hey Brian can you tell us the brand of the disk. Please 🙏

[@bobbybeattie4738]

Awesome. That's alot to sharpen blades tho. They last longer for us. But dif things can factor in. Blade height type of grass. How tall and thick the grass is your cutting. We used to have a few big fields we did every few weeks. Our blades last atleast a week longer now after dropping thoes

[@frankdelucey2137]

I’m going to try the flap disk today on a brush hog (farm tractor mower)

[@matthewwilliams6596]

I have always done it this way but i use a file to knock off the bur on the under side of the blade

[@brettrussell561]

That's the way to do it 👍

[@treyvonlanwservice6860]

Amazing video bro 👍

[@daledietrich2715]

So did you use 40 or 60 grit flap disks?

[@kennethcastaldo7239]

Awesome video brother 👍😎

[@horninght]

RBG 712. 👍

[@BriansLawnMaintenance]

💯👍

[@Charlie-fc1mh]

Hey Brian, nice grinder. Looks like it takes a lot of metal off with each pass. I'm thinking about using my vibrater sander with 100 grit. Because it's smaller, I think you can follow the contour of the bevel on the blade much better. Enjoyed the video!

[@stevereitnauer8406]

I don’t think it’s taking as much as you think off, imo

[@cokedude58]

I've been using the angle grinder + flap disc for a few years now. It takes off very little metal so your blades last a lot longer. Like Brian, I usually sharpen every 8-10 hours and it takes longer to remove and replace the blades than it does to sharpen with the flap disc.

[@johnathanbowlin7523]

Did you know you can “balance” blades with a round shank screwdriver?

[@aquaclean]

Does any know the brand of disk ?

[@fleadoggreen9062]

What grit flap disc you guys using? I bought 80 , I didn’t realize different grit ,just looked for flap disc and grabbed the first one It’s 80

[@kief4diamonds]

I use a bench grinder and finish with a file to make sure i get the burr off

[@vazz22]

Appreciate this video

[@xordoom8467]

Thank you, this was great... Will save me time and money doing it myself.

[@joshuaneal4125]

Any thoughts on the blades that sharpen themselves the more you use them? I know a set for my Ferris with 52" deck runs about $180 for 3 blades

[@richscott2952]

The grinder sounds good my Milwaukee does not sound as good and I do a lot of grinding

[@redblue40rc33]

Just bolt on some samurai swords and it'll shave grass just driving over it ... 😂 Cheers from Arkansas brother...I had to, it had me laughing

[@Fencearmor]

Hope the weather is starting to cool down for you. Always great value in each video, nicely done.

[@mclovin_it8872]

What sanding grit would you recommend to give you the best results without having to do so many passes on a blade.

[@rcr898]

Ty for the video sir

[@therealRustyShackleford]

Brian, what happened to the All American Blade Sharpener?

[@BriansLawnMaintenance]

Nothing, we just sold our jig since we bought the RBG 712.

[@JJLandscaping]

Brian When you buy brand new blades, do you sharpen them or use them as they come Thanks

[@Dale.Nienow]

Great video Brian, I use the RGB 712! But an angle grinder works awesome for touch up!

[@brianandlynphilippines]

You spelled his name wrong, Dela 😂

[@Dale.Nienow]

@@brianandlynphilippines oops I am human, I am not perfect

[@smallengine]

How often do you sharpen/replace blades? And how many lawns per blade sharpening?

[@jimmybeech5223]

Question do you think an 80 grit is too rough on the lawn mower blade. Thank you

[@jimmybeech5223]

What grit is that flat disk. Thank you

[@ericgarrison707]

I did great with that disk until a finger came in contact with the disk. Since it is large, the guard was off the grinder. Right through the leather gloves and down to the bone.

[@BriansLawnMaintenance]

Yikes!

[@vivimu]

Why did you stop at the bone? Just keep grinding through it

[@robs.8629]

Brian making replica Hatori Hanzo swords.

[@programmingchicago]

I have a star blade, with 5 or 6 points. Hard to balance. I know why they make them, but what a pain it is!!!

[@nickikarr2613]

Looks good where is your great American sharpener? Did you ever get your rbg?

[@BriansLawnMaintenance]

We did!

[@St_Luke_333]

I've got 4 small blades on my mower, how do you balance those

[@BriansLawnMaintenance]

Use a balancing cone for $5.

[@GabesLawnCareLLC]

Hey Brian I was wondering what size your storage locker is?

[@n9las]

A simple hand file works well. It takes very little effort to create a sharp edge and no power tools needed.

[@theemeraldfox7779]

These kids today are too lazy for that

[@shawnstevens858]

How do you get tool companies to send you tools because I've spent well over $3000 with Milwaukee and about $5000 with Husqvarna.

[@BriansLawnMaintenance]

Just grow a large social media following I guess. Dunno, they reached out to us. God bless.

[@stevenclark5450]

Are you happy with your 18hp Billy Goat leaf loader or do you sometimes wish you had a little more power?

[@BriansLawnMaintenance]

Nope, I love it. If you're going with a full dump trailer leaf box, I'd get the 37hp unit. Otherwise, the 18 has been just fine for us. We did a whole separate video on comparing leaf loaders, check it out!

[@stevenclark5450]

Thank you Brian! I am putting together a set up similar to yours with a dump insert on my F250 with a leaf box. I will go with the 18hp leaf loader to start.

[@MoeNAmy]

Whats the brand for those disks?

[@BriansLawnMaintenance]

Just home depot ones!

[@JohnDoe-ef3wo]

What frit do you guys recommend?

[@BriansLawnMaintenance]

40-60

[@paullang1505]

I thought you used the All American Blade sharpener?

[@jimbauer5560]

Brian, What would you recommend for us homeowners for sharpening our blades?

[@BriansLawnMaintenance]

This exact setup! Or a $6 sharpen from your local dealer, since you’ll probably only really need a sharpen once a year.

[@jimbauer5560]

@@BriansLawnMaintenance thanks Brian, maybe In some of these how too videos maybe drop a quick how to for us normal guys who live where we don’t get lawn service. Love the videos.

[@clearcutlawncare7954]

Just get an electric grinder with a cord probably run you 20 or 30 bucks and the flap disc is like $6 and you're good to go

[@boonecountygenerators3052]

"That angle is everything..." No. No, it's not. It's not the space shuttle. It's a lawn mower. Go at it carefully with your angle grinder and flap disk. Try to maintain something reasonably close to the factory bevel. Get a nice edge on it, and make sure it's balanced. If the angle of the bevel isn't perfect, your grass won't care.

[@BriansLawnMaintenance]

Not true at all. While it’s not the space shuttle, there’s a lot to plant and turf health care. If you don’t know what you’re talking about, which is obvious, then I’d not offer your two cents on what a professional knows.

[@boonecountygenerators3052]

Most grass gets cut with dull blades. If you sharpen yours frequently, good on you. The homeowner who sharpens his blades regularly will have a healthier lawn than the guy who sharpens them once a year, even if the angle isn't exact. The best advice to the homeowner is, don't let perfect be the enemy of good. Maintain your equipment and don't sweat the small stuff.

[@jimweisgram9185]

​@@BriansLawnMaintenancewell, I think this person knows something about sharpening edge tools. Watching Brian, I'd say he has some gaps. Yes you want to remove the burrs after grinding, but grinding them off is one of the worst ways. As for blade angle, the main bevel angle is a tradeoff between keenness and robustness. Any angle can be considered sharp. The manufacturer has determined the angle they recommend and you will get good performance. But if I was mowing an area with a lot of twigs, I might choose to sharpen to a steeper and and get a longer lasting edge in that case.

[@shawnstevens858]

You could polish that up real nice by touching it up with a flat file you would youse on rakers for your chainsaw.

[@CRFHONDARIDER100]

I’ve never heard of balancing blades id assume it’s for the spindles but I’ve yet to have an issue

[@cabbyhubby]

ive never balanced mine .... worked for me for the last 35 years .... i usually only sharpen once though ..... when they get dull, the next time they are wore out ... we have a bit of sand here, hard on blades

[@johnslawnseasttn4489]

My question is how many ppl sharpen there brand new blades besides me? Just feal that few seconds with the flap disk gets them razor sharp

[@BriansLawnMaintenance]

I do not personally

[@shanepipkin4041]

balance don't have to with these beefy spindles and commercial mowers never do mine no spindles yet

[@BriansLawnMaintenance]

Ya same here haha

[@johnslawnseasttn4489]

Exactly how I do it. Let's you sharpen with out taki g to much metal out of the blade to fast

[@dancoffman4336]

All American Sharpener for me...Freehand has too much room for operator error with angles, etc...

[@robsolo4024]

Our company actually bought the magna Matic it was like $1000 let me tell you I’ve use the RBG and the hand grinder but this thing sharpens blades very fast Downside it’s just expensive but in my opinion it was worth every penny we have over 300 clients so we are cutting 300 lawns plus a week so you know how much sharpening that is

[@BriansLawnMaintenance]

Very cool!

[@timtrainer10]

What about that bad dog diamond blade which is $200 lifetime guarantee? You guys ever try that in a grinder? It looks awesome it’s just I wouldn’t use it enough to justify the purchase. Although you can use it to cut concrete as well so it might be useful if you also do landscaping bricks.

[@robsolo4024]

@@timtrainer10 Never tried that one or heard of it but the RBG is a good price plus it’s made in the USA. I would go with that one first give you the exact angle every time.

[@samlaramee4107]

This way or the rgb712? Thks

[@BriansLawnMaintenance]

Rbg712!

[@williamburdon6993]

You could turn Doyle Brunson into a quiet watcher, with a good smack with that thing.

[@williamburdon6993]

I meant Doyle Hargrove lol sorry

[@poisonfortheweak]

Out of the list of tools where it would be a really good idea to use some safety gear like gloves or a face shield, this would be one of them. Got the ear protection at least. Oh well, your body, your choice. I can’t say I don’t prefer going raw dog while grinding with my tool as well. Also funny, we got people that rip on others for not wearing a mask out in public but then go home and start grinding metal and sanding wood, lacquering floors etc with no protection whatsoever, lol…

[@thewolf61691]

You can get away with doing it this way but you're definitely changing the angle a bit.

[@BriansLawnMaintenance]

Yup. That’s why the All American sharpener is a solid crutch. Or a more expensive option like the RBG712, then again that’s also $600+.

[@d_dizzie_druck5753]

The last time i had my blades shapened by a local guy, they ended up off balance😑. Can't wait to get my All American Sharpener, & own grinder with flap discs.

[@kennethrobinson5151]

I love mine I think you'll feel the same way once you get your set up right

[@Firefighterthomas176]

Just get like a Honda generator from Lowe’s or Harbor freight

[@appiconll]

Yeah, but how to sharpen when the blade has a slight curve to it?

[@jimweisgram9185]

By the way, ive seen people balance their blades by hanging the center hole in a nail sticking out of the wall. Not perfect but better than doing nothing.

[@Lando94]

My zero turn blades are so fucking dull it’s insane ! Going to bust out the grinder on them this week 😅

[@richiesun9676]

8 to 10 hours? I go a whole damn season.

[@joec2442]

No PPE? IF NOT WHY NOT? Definitely not a good how to and keep people safe

[@keithgibbons195]

Have you herd off yellow hornet sold on Amazon. I use flap with it check it out love mine

[@BriansLawnMaintenance]

Yes but not a truly useful tool. Get a dedicated grinder.

[@keithgibbons195]

It is dedicated grinder mounted on yellow hornet witch has the correct 30% angle. I sharpened 5 sets off blades with it last week. I called it yellow jacket by mistake it is A yellow hornet . I have a grinder with 40 grit flap mounted on it .

[@mtrotts5578]

Is this the 20th vid on this subject??

[@bnorby213]

Pretty disappointed in how chewed up my new Ballard blades were in only like 5 hours of mowing

[@dandylawnandmaintenance4407]

Well you know you will always have one guy chiming in telling you your doing it wrong. Well here ya go. I have sharpened for years and not just mower blades but anything that cuts made out of metal. I owned a business doing it. So I have a RBG 712 and All American sharpener. Your sparks are flying the wrong way my friend. So I see someone also commented Country Side also did a video using his RBG. If you watch it check out which way the sparks are flying. Toward the blade VS yours flying away from the blade. Your sending the burr toward the edge. He is sending the burr toward the inside of the blade which is correct. At least your header does not say correctly. But hey if its sharp go with it.

[@martindennehy3030]

Blades are never supposed to be super sharp, new blades are never sharp, and never go near the underside.

[@robertmceuen3630]

Bad! No balancer? Bad! Never sharpen if you're not gonna balance the blade right then.

[@BriansLawnMaintenance]

Always balance!!

[@mrbmp09]

I just watched the idiot at next level diy channel say the correct way is to use a file. LOL !! And An angle grinder will destroy your blade.

[@stumpingrimy1686]

waf waste of time. didn't show how to sharpen at all.

[@leslieframer4068]

That's a screwed up blade first you always use a stone disc grind towards the blade at set angle and grind off enough metal to re straighten the edge and get the back side flat again never grind the back his blades look shiny and pretty but I can see the angle flaws and they'll dull in the first use.. thanks but most homeowners etc can't tell oh also us something with a set angle or clamp temporarly guide to blade and grind until angle is uniform.