Stop Doing This!! It's Completely Unnecessary! ► Sharpening Lawn Mower Blades FAQ

So over the last few weeks and months I've received this question almost as much as any other topic, and that is, should you pre-sharpen your lawn mower blades. I know it's a simple topic, but I wanted to spend a few minutes and give you my answer in the most nontechnical way possible, ha!
Now I will say this, I am not a lawn mower blade manufacturer and no, I cannot provide a technical answer from that vantage point. But I will sat this, that after buying hundreds of lawn mower blades throughout the years, I believe that unsharpened blades right out of the box seem to cut just as well as a regular razor-sharp-edge lawn mower blade that was recently freshly sharpened.
I know everyone wants your lawn mower blades razor sharp, but the reality is, they don't really have to be. Take a look at the laser-edge lawn mower blades for example. The cutting edge it's self is quite honestly, a rather dull and not razor sharp edge. But those blades still slice and dice like crazy. I feel the same is true for a lawn mower blade right out of the box. They don't need to be "razor sharp" to leave a good cut quality. I feel more important than that is the correct angle and an above average sharp edge, basically, not a blunt dull edge.
The bottom line is, the protective paint and coating wears off extremely quick, and before you know it, the actual metal is exposed. I've always personally felt that fresh blades right out of the box always seem to cut the best, but that's my experience and opinion. After that initial day or two worth of use, we then go ahead and sharpen the blade.
Love to hear your guys thoughts on the topic! Do you guys presharpen your blades, or prefer them right out of the box with the protective coating and paint? Leave us a comment down below and weigh in!
Thanks for watching!
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[@BriansLawnMaintenance]

Curious, do you guys presharpen your blades or do you run em fresh out of the box? It’s a simple question but one I get a lot! Hope this answer helped!

[@mooch91]

Never saw the reason to pre-sharpen the blades - the paint is there but it wears so quickly that I personally don't think it makes a difference to the cut.

[@LanceSheppard]

I hit mine with a hand file a few times

[@johntyson]

I don’t pre sharpen. I feel like they’re sharp enough out of the box and I feel like the paint cuts down on friction. If only for a very short amount of time.

[@meadowviewlawncarellc8079]

Fresh out of the box, paint wears off the edge in minutes. New blades are definitely the best cut.

[@richardspropertymaintenanc5807]

Nope never sharpen when you buy a mower it doesnt come "pre sharpened" lol

[@Santos-nq6ub]

Loving these videos about tips, Brian! Please keep the videos coming! They help a lot! 👍🏻

[@stevemtc1]

I put my blades on backwards and listen to customer complaints and only get three lawns a week done consistency is the key in this business

[@craigmay8888]

Years ago when I worked at a tractor dealership they taught me To take a file and flatten the front edge just a little bit it would keep the blades from rounding over and they would stay sharp longer

[@michaelvanhouten9046]

I grind them just to balance them, I have never had a set balanced out of the box

[@hermancm]

Michael VanHouten Same here, I just check for balance on the bearing balancer.

[@RLWSNOOK410]

My man I was just in your neck of the woods this weekend, was seriously impressed with the stripe game most landscapers have. Must not be easy to gain clients and maintain them as it looks like many are very particular about their lawns. While I prob drove by some of your lawns I’m super impressed y’all in metro Detroit are killing it at the lawn care game. Gave me a new appreciation of you man. Keep up the great work.

[@Fencearmor]

Interesting to see everyone's outlook on this! Great video as always, Brian.

[@rordadar1]

Just bought the RBG934 for our blades on our 4500 groundmasters and 4 - 72" toros based on your previous video. Definitely a good investment! Also we cut turf at 1" or less and do not sharpen our blades before the first cut.

[@Robert_H_Diver]

Yes!! I just started buying those Oregon blades and they are awesome!!!

[@jamesbedell7261]

Hey Brian, love the content with your channel!!!!!🇺🇸 I agreed 💯 % you don’t need to sharpen new blades!! There the best there ever be!!!!

[@jamestaylor1371]

Just wanted to add that I just bought a brand new set of Oregon high lift for my 46” Ariens rider & they were 100% balanced right out of the box. Thanks for the video!

[@Chris_In_Texas]

Put them on the blade balancer and see how well they are balanced from the factory...

[@mowingtrimmingedging214]

Thank You for another FAQ video. You have a lot of them already and I do watch them all, but I learn each time regardless.

[@Cool58F250]

Hey Brian, Hope your doing Well, I Do Not Sharpen my New Blades, I Install Them and the Cut is Awesome. So I Feel Their is no need to in my Humble Opinion 😊 Thanks for Sharing Brother, Take Care and Be Safe Out Their 🇺🇸

[@samporter4818]

At my Home, I mow 7 acres of tough Fescue, once per week from Late march until middle October and I have a brand new 2022 Bad Boy Rogue, 61 with the 35 HP Kawasaki, with the cut set at 3.5 inches. My last Zero turn was a 2017 Big Dog Diablo MP, with the same engine but 60 inch deck. Before that I had a 61 inch Snapper Pro Commercial with the 25 HP Kawasaki engine. I always have used an angle grinder to 'Freshen' the blades during this long season, in between 'bench' grinding, maybe 1/4 inch past new, never balanced the blades and my lawn looks like a Golf course, with no Vibration and not one problem with Spindles. New blades are just attached as is and they work great. Fuel consumption is much, much better with new blades and TODAY, that savings helps! Love the Video's!

[@joshmanske5896]

I agree with you. The sharper the blades the bigger the dings. We have gravel driveways everywhere and high lifts suck it into the deck, so blunt, out of the box is better...plus commercial mowers spin faster.

[@ruebentaylor6965]

When I bought my mower I didn’t sharpen the blades. I cut one of my yards it seem like the blades was just laying the grass down. I removed them and sharpen them slap them back on and it cut a lot cleaner

[@Dale.Nienow]

Great video Brian, the FAQ are continuing! I never pre sharpen mine don’t have time for that lol!

[@ethanwilliams1825]

I put an edge on all of my new blades, I have thrown a new set on out of the box to me they cut like blades that haven't been changed in 2 weeks. Also I have found with factory Exmark blades and especially Oregon blades they are out of balance right out of the box. I like the Oregon blades but I have had some that will spin a full revolution on the balancer they are so far out.

[@leewindham7996]

I really like the previously mentioned comment to check the new blades balance before use....just plain smart thinking :)

[@robertflood8515]

I always sharpen new blades. The factory edge is the same dullness that I sharpen my blades at on old blades.

[@chrisyanda8884]

The blades I got for my Gravely, from Gravely were unacceptably dull so I did sharpen those after mowing with them once and seeing how much they were ripping rather then cutting.

[@familyownedlawncareservices]

i have never sharpen my new blades. and i will say i have two weeks ago put one of my blades on backwards i was cleaning the deck with it then put it right on mowed some yards did good then i got to a good yard of mine it started to gouge and i was just about to take it to the shop to level the deck then i seen the blades on backward there my sign lol great video .

[@arrenflocchini2014]

Hey Brian. My saying is to people! I don't use a butter knife to cut my steak! Many benefits keeping blades sharp, fuel saving quality of cut and helps with catching grass!

[@brandons2336]

Just had a guy put a blade upside down thursday . He couldn't figure out why the lawn looked so bad . Until I looked under the deck noob!!!!! I remember my first time .

[@BriansLawnMaintenance]

Hahaha

[@ronh9384]

Good video Brian. I do the same with mower blades that I do when my truck needs new tires. I buy a new truck or mower! 😀 One thing I am curious about… do you have a particular angle you prefer to sharpen your mower blades or do you sharpen at the same angle as when the blade was new? I am curious if you or your viewers, i.e. other professionals, have an idea of what blade angle seems the most durable or lasts the longest? Thanks for your time.

[@derekshoots556]

What’s the best blades for my scag v-ride 2 36in Advantage deck

[@stroutstergmail]

I think your right, the angle is more important than the edge.

[@daveminor7028]

Thank you for making this video. I sell lots of blades and guys just don't understand that they don't need to sharpen blades before use.

[@BriansLawnMaintenance]

For sure pal

[@frankiefrank2628]

I never sharpen new blades. They have the best cut and stay sharp longer.

[@BriansLawnMaintenance]

Totally agree

[@Grassology-vs1hn]

Frankie Frank , facts

[@mtnmotoadv]

I wonder if spraying a coat or two of paint over a freshly sharpened blade would make it last a little longer?

[@mikedennis8]

What's the website to order them blades? I have a 2019 lazer z x series. Thanks

[@883mustang]

Love the vids Brian! Question though do you just mulch leaves up through fall until they all are down? Or do you do multiple cleanups as they fall? A question that I’ve always had

[@BriansLawnMaintenance]

We just do one at the end in November

[@Lakecenterlawncare]

Hey Brian, where do you buy your Oregon blades from?

[@larrysanderson5502]

Are they factory balanced after the paper label is installed or before. I.E.does the label need to be removed. Thanks.

[@jesush.vazquez6851]

I also get oregon's g5 and have to sharpen them, not because they aren't sharp, I don't even pay attention to it when new but to get them balanced, that is my personal issue, day and night to me with balance vs unbalanced blades

[@Genman510]

Thanks great video

[@lawrenceoldham6030]

I put my newly bought blade right on the lawnmower but now the grass blades’ cut edges look rough and shredded. I can’t remember if that was the result when I first used it, though. I’ve been very careful with the blade; not to hit any rocks or sticks. Have had the blade for a few years. I guess it’s time to sharpen.

[@cyberdemongenuineundead497]

I also called Oregon and they said their blades are not meant to be sharpened when new. I don't sharpen new blades until they dull, like you said. My favorite are the mulching blades.

[@briantanner4328]

I dont presharpen my new mower blades from the box put them down n my exmark and mow Are those mower blades thicker then the oem exmark factory blades

[@TexasNightRider]

I'm going to contact Karl Childers from the Sling Blade movie for his recommendation. He knows everything about lawnmower blades.

[@davidp4676]

I agree. Just ask Jesse Dixon.

[@jasons9249]

I only run the deep dish blade. They are the best for cutting all season in IL. I blocked the discharge on my rider and would mulch everything all season long.

[@genemetz1945]

Is it possible to put an Oregan blade on a Kobalt 80-volt lawnmower? It has an arrow-like hole on the blade.

[@show-memowsnow1250]

Throw them on and cut for the first time. I’ve had a bad experience with the Oregon blades. I either use xht or oem scags.

[@leongetz5872]

The part of the blade that does the cutting is the square corner of the blade and about the first inch. The remaining just cuts the clippings to smaller pieces. Magna matic has a very good video on blade sharpening 101.

[@robertheinkel6225]

I have never sharpened new blades. Worst set of blades I bought were Gator blades. I had high hopes bested on the reviews, but they left uncut grass along the outside six inches of the deck. It was like they had very little lift, and didn't lift the grass to cut it. Went back to my standard blades, and no more issues.

[@thomashughes9361]

Yes, I take a file & put a nice sharp edge on it, but in central florida we have white sugar sand, & I still go through 2 sets of blades per spring/summer regardless....

[@botfoblhrp]

I agree with Brian , new is very good . for razor sharp people, do you stop at 1 acre to resharpen, or every tiny yard replace or resharpen. Too sharp wears blade out quicker. And people with big yards don't want grinder running all day for one yard. Lol just my opinion. Nothing more.

[@JackSmith-ly2to]

I might if I am in the mood to do it. I might also check the blade edge to make sure it feels sharp before that. I should get used to filing them so that when I do anything it does not get the metal hot. Just watch your fingers while filing the blades to avoid accidents and don't try to be hasty as that will make those accidents more likely to happen.

[@jamesquarlesjr.7743]

when we had the shop i used to check the blades for some customers and they were never balanced when new. granted that has been a long time back.

[@jrhodes843]

Get a mulch kit and mulching blades. Show how your sharpen them. Let us know how you like the mulch kit. I personally like them. And use them.

[@d-n-alawncare8910]

Where do you get blades from

[@outerspaceslandscapellc]

Ive had guys try to "sharpen" the bottom side of the blade... I will never sharpen a brand new blade, it just decreases the life of it. I run full mulch decks, so the life of the blade is decreased anyway. Hope this helps anyone who also runs mulch decks.

[@lewksantibanez4130]

Brian! Just got the Eat, Sleep, Mow, Repeat hoodie in black and a decal! You need to advertise your products more man! I am so excited to get it!

[@BriansLawnMaintenance]

Ha thanks pal!

[@bigugly1911]

I check balance and adjust if necessary. Almost always have to balance new blades. I don't mess with the factory edge until it is dull

[@artderamo8053]

Are Oregon blades ok to use on my scag cub? And what kind, I have scag mulching on it right now but I'd like to buy Oregon if there good, thanks

[@BriansLawnMaintenance]

Oregon makes a great blade but I’d ask your dealer about what works best on your mower.

[@Pure_KodiakWILD_Power]

i thought you meant presharpened as in sharpened for quick swaps, as opposed to "remove blades, sharpen, reinstall blades." nope, i throw new blades right onto the machines. scalpel sharp blades dull faster than just plain sharp. and of course, it's all about that sharpening angle.

[@austinnipper6460]

I've heard the dullness at the tip helps keep the blade sharp longer. If it's razor sharp, apparently it'll bend back the metal quicker. A razor sharp blade is also more susceptible to to damage due to the decreased backing at the tip.

[@BriansLawnMaintenance]

This is tru. I’ve always heard you want a basically dull finish, but perfect angle.

[@andyslawncareandoutdooradv]

Brian could you make an FAQ video on how you map out your route for the day?

[@BriansLawnMaintenance]

Sure buddy

[@rickydavid6441]

I just put new blades on my mower and it leaves little grass lines sticking up why

[@stevenrichards3699]

I always balance a new blade, you would not believe how off kilter some of them are.

[@moneymakingmikeg.9555]

I buy em , slap em on & get back to mowing. I hate sharpening blades on general so not gonna spend time sharpening new ones. Just my 2 cents though. Hope all is well & Dirty Jersey out!!!

[@BriansLawnMaintenance]

I do that all the time haha. Time is money, but eventually I get around to sharpening all of them! ✌️

[@ricepadi29]

I started checking the balance of new blades last year and had more than not unbalanced so we sharpen just to balance. I put the spacers on under the blades instead of on top. I did it on two of the three so one blade was almost 2 1/2 inches higher. Ya I felt like a noob.

[@thelaC100]

You should do a test plot video . Where you cut the grass with a new blade and then cut with a blade that’s been sharpened . Perhaps

[@scokeing]

🙃 yup done it too. I use out of the box no sharpening, but now you got me thinking, Should I? Na, just extra unnecessary work IMO. Might have to do a 3 blade test, new, freshly sharpened, and used, and check stripe quality in one path.

[@BriansLawnMaintenance]

That would be a fun test!

[@Rooftop923]

Blades are sharpened from factory ,paint is just to let you know it’s brand new and I don’t think need sharpening

[@Sara-L]

Probably, but I think also to keep it from oxidizing during storage.

[@beardedguardian71]

Ive never heard of that. I always say there is nothing like a new set of blades

[@coobay978]

Your the second video I watched that said right out of the box blades cut the best. No presharping.

[@clarktraub4540]

Have you ever tried scags blades? Marbain steel . Tough stuff.

[@davidmoore8741]

I pre sharpen and sharpen them all the way to the stud. Seems to get a better mulch and finer clippings. It's a me thing, I also sharpen with the wheel running clock wise and a 30-35 degree face angle, I make them so sharp to where it will cut into cardboard. I also will fine tune the balance by getting them as close A possible on the cutting face then hit the corner of the high lift wing and get them perfect. Years ago a company I worked for kept blowing spindles left and right and I didn't do the sharpening so I asked the boss if I could for my mower and I stopped blowing spindles, and then by the end of the year I had taken over And the other guy. Was fired

[@meadowviewlawncarellc8079]

Hey Brian, need a honest opinion about your backpack blower video last year. Gonna be buying a 5th backpack blower this year for leafs I love my 8500’s and was gonna get another but also now thinking about the echo 8010. I haven’t seen the echo in person yet, but if you had to buy another blower today for leafs after using both what one would you buy?

[@Robert_H_Diver]

Meadow View Lawn Care LLC Husqvarna 580

[@meadowviewlawncarellc8079]

robert harrison pretty much a twin to the red max 8500. The red max even has the Husqvarna emblem on the fuel tank.

[@BriansLawnMaintenance]

8550 hands down. Then it’s a toss up between the BR800, ECHO 8010. Both great units. I’m just a Redmax guy when it comes to backpack blowers.

[@meadowviewlawncarellc8079]

Brian's Lawn Maintenance thanks!

[@toddentingh4449]

Balance them out of the box. There never balance just right .

[@JamesZ1025]

Sorry Brian, couldn’t disagree more! Put that or ANY new blade on a balancer, you will see why a lot of us sharpen new blades. I have the mag 1000 balancer and 9000 grinder. Trust me I was surprised to see how unbalanced new blades are

[@outlet6989]

I'm not surprised a bit. My three new TORO zero turn mowers, 52-inch deck, and blades were all out of balance using my wall-mounted blade balancer. Their cutting edge was perfectly flat.

[@nolifemowlifelawnmaintenan4347]

They are out of balance sometimes out of the box, I make a light pass over to get them perfectly balanced.

[@garrettwatkins9001]

New blades are the best my opinion Garretts Lawn maintenance from Byhalia ms

[@tjw5747]

The last 20 seconds is why I subscribe 🤣

[@BriansLawnMaintenance]

Lol

[@hermancm]

I don’t resharpen a new blade but I check it balance. I’ve heard if you sharpen a blade too sharp, like so it will cut paper or cardboard that the edge will roll back some and it will dull the blade.

[@eosjoe565]

I've been using John Deere lawn and garden tractors for almost 40 years. I always buy OEM JD replacement blades. They don't paint them and they are always RAZOR sharp right out of the box - literally. For my conditions I've always found that a SHARP edge cuts best. In fact, the sharpening instructions in the manual states that the sharp edge should be no THICKER than 1/64-inch. A lot of guys misinterpret this to mean no THINNER than 1/64-inch because they only look at the illustration and fail to read the accompanying text.

[@moc1911]

Pre-sharpening takes off the paint. Leaving the paint on helps protect the blade so that you don't have to do the first sharpening as soon. I haven't done any tests, but this seems logical.

[@johntyson]

I’ve been in business for two years now. Gone through MANY blades. I just now figured out that I can buy a new set off Amazon for $25. I’ve been buying mine from the dealer for $100 a set! For two years!!!

[@BriansLawnMaintenance]

There’s cheaper ways go buy them for sure!

[@randymelendez7803]

Buy Oregon and hit them with a flap disc to sharpen and balance. Cut mainly tall fescue and weeds.

[@shaunsmuder1637]

We usually have them pre sharpened because they're not balanced right out of the box, put one bran new one on a balancer, in my experience every brand new blade I've gotten was not pre balanced.

[@marcyounker6379]

I would like a video on lazer edge blade s and to sharpen them or not

[@oscarsalas3200]

What do you think about original bladed vs after market. Original are expensive for 60 inch they are 20 each.

[@meadowviewlawncarellc8079]

Oscar Salas aftermarket Oregon blades or rotary copperhead are the best after original. For fall leafs I love these www.amazon.com/Stens-302-827-116-5171-S-Toothed-Hi-Lift/dp/B01H5K17X6

[@BriansLawnMaintenance]

Yep we use Oregon’s

[@mooch91]

What's the part # on that blade and is that for the 60" Lazer? Thanks!

[@BriansLawnMaintenance]

Oh gosh I am not sure sorry.

[@pepguy]

Would those aftermarket blades work on a cub cadet pro z??

[@BriansLawnMaintenance]

I’m sure there are highlift blades for the Cub, sorry I don’t know the sku

[@eshskis1]

Agreed, the reason new blades cut better is ironically becouse they are not knife sharp, virtually every blade manufacturer along with every major lawn mower manufacturer on the planet advise against sharpening blades to a knife sharp edge, new blades have a 5 mil blunt edge

[@g4outdoors]

I would love to do a video response to this! I am picturing my Benchmade Mini Griptilian knife as I'm watching and listening. Factory grinds on knifes are rough cut / ground. In the case of mower blades, they are just laser or water jetted rough cut. Both blades are cut to a high standard, some definitely higher than others. But still yet, they are designed to be a certain angle and depending on what it is designed to cut, they are designed to be have a certain sharpness. Now if you order a custom knife, it will come honed to a mirror finish to cut at it's full potential. Put the same level of detail onto the mower blade, and you will defiantly get a better cut. Does the factory grind / cut do an excellent job? Absolutely, but its not a refined cut. As far as mower blades go and for what it being utilized for, presharpening them is overkill. It does help, but for the number of cuts, and the frequency of times you have to sharpen them, leave the factory one on, because you are just going to be re-edging it in a week either way.

[@BriansLawnMaintenance]

Well said buddy

[@freedome405]

we use high lift here in oklahoma

[@playgroundofsound7683]

Is there a such thing as super ultra high light blades? The left side of my Ferris doesn’t lift enough and left 2 inches don’t cut as well

[@BriansLawnMaintenance]

I’m not sure about that one!

[@ericf.7081]

I installed a new set of Oregon blades on one of my mowers that were not presharpened. The grass tops were all broken and brown on the tips. Why is this happening?

[@BriansLawnMaintenance]

I’ve never had that issue, Sorry

[@jimmybeech5223]

Is a hi-lift Gator blade better than a standard high lift blade? Thank you

[@BriansLawnMaintenance]

Gator for leaves, high lift for mowing.

[@jimmybeech5223]

Thank you

[@cdy291]

I put them on and run them till I notice the cut is not quite as good, which is usually 25 to 30 hours. Then I look them over and may resharpen or may chunk in the trash just depends.

[@stepside2839]

Oregon blade is a G5? or G6? It makes a difference

[@BriansLawnMaintenance]

G6 I believe

[@dwightphillips6164]

exmark. my opinion is razor sharp is best. it will not last as long especially if you hit sticks and such. i mow about an acre + and change them out after first 2 mows and then mid season. they sharpen easy as long as you don't wait too long. keeping the angle close to factory is important. dull will last longer since it will chip less. small chipping isn't an issue. i just finish with a file and make sure to watch those areas. i have had 1 exmark blade that was close, but out of balance fresh from the box. i have not seen a balance issue otherwise, this includes kubota.

[@robertmunguia250]

It’s mixed review. Other guys on the tube say yes sharpen them before you use them and so forth. What’s best?

[@BriansLawnMaintenance]

You do not have to pre sharpen. Anyone who says that doesn’t know what they’re talking about, period.

[@ryantheentrepreneur4040]

I’m sure the color depends on what factory manufacturers them. Also is it paint or powder coat?

[@BriansLawnMaintenance]

Powder coated maybe?

[@chipregitz4346]

I personally don't sharpen new blades. When I sharpen blade I always put a blunt edge on them and they seem to hold there edge longer than making them razor sharp.

[@topnotchlandscaping7043]

We use the same blades. We use quite a bit of them also. They bend easily( when you hit things that you can’t see) As for sharpening them new. No, who has the time to sharpen sharp blades? I know we don’t

[@topnotchlandscaping7043]

First of all know your audience. I haven’t balanced a blade in years. Never had a bearing failure, or any issues. When you cut grass/ landscape for a living then you would know how to do it too. So watch yourself. Never had any issues with things other than now I have a keyboard warrior calling me a dumbass. Hey jimmy jimmy gfy!

[@topnotchlandscaping7043]

I was thinking about this all day today (don’t flatter yourself just wanted to not be an a-hole on Brian’s page here)and just adding to your remarks. I have made hundreds of thousands of dollars mowing grass, not including landscaping, and run a profitable one man show with a helper. That’s not too dumb. Pretty smart I think. Oh and my customers pay on time every time! Good luck sir!

[@Bob_Adkins]

Ideally, you sharpen a blade very sharp for the prettiest cut and less strain and fuel usage. Since the main enemy of blade sharpness is speed, you can actually slow the engine speed 20% and the blade will stay sharp 3x longer. Of course too slow and lift is poor, so you have to find the sweet spot where lift and sharpness are both good. Pros don't have that luxury, they have to go balls out and their nice sharpening job is gone in a day or 2.

[@LansingLawnServiceLLC]

I agree. Brand new blades tend to cut the best. I do not presharpen my new blades. I think it is a waste of time and a good mower blade.