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Old 05-28-2012, 12:12 PM
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johnwright238 johnwright238 is offline
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Do you sharpen new blades?

I replace blades that have been beaten up by rocks and foreign objects but I don't sharpen them first. If the wear and tear is not too bad, that is when I break out my angle grinder with a 60grit flap wheel and put a 45 degree edge on the cutting side and a few steep passes on the backside.

How do you guys take care of your blades? Tempted to try "new" blade designs but always keep going with regular mulching blades. Anyone have a success story on a particular blade design I should give a try?
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Old 05-28-2012, 12:23 PM
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baileylawnservice baileylawnservice is offline
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High lift until leaf time then gator blades. Sharpen as needed....
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Old 05-28-2012, 12:26 PM
Dr.NewEarth Dr.NewEarth is offline
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We sharped new blades. Alot of times they're coated in paint to stop them from rusting in storage before they're sold.

Our blades are sharpened on a 30 degree angle????
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Old 05-28-2012, 08:23 PM
Roger Roger is online now
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Quote:
Originally Posted by johnwright238 View Post
.... and put a 45 degree edge on the cutting side and a few steep passes on the backside.

.....
As somebody noted, the angle for most blades is 30, or 33 degrees. 45 is way too steep. Also, I have never read anywhere that a blade should be touched on the backside (maybe a flat handfile to take off a burr, but never a grinding).

To answer the question: Yes, all new blades need sharpening. Usually, the manufacturing process includes a shear to take off the edge, but the shear does not make the blade sharp for cutting operations.
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Old 05-28-2012, 08:29 PM
stansoph stansoph is offline
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Yes. I still sharpen my rotary blades from tip to center. I don't know if it really helps but it looks cool.
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  #6  
Old 05-28-2012, 08:37 PM
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jsslawncare jsslawncare is offline
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1. I use a Magna Matic sharpen.
2. No, I don't sharpen new blades or wash my new underwear.
3. I guess that's all I got.
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Old 05-28-2012, 08:56 PM
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THIESSENS TLC THIESSENS TLC is offline
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I always sharpen new blades, as somebody else said they are coated in paint and imo just not sharp enough.
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Old 05-28-2012, 10:50 PM
Hawkshot99 Hawkshot99 is offline
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Sharpening or not depends on the brand. With the Exmark blades I got from the dealer it was never really required. They mowed great new. My Oregon G6's came with a thicker coat of paint on them, and did a piss poor job with no sharpening. After I sharpened they were a totally different blade.
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Old 05-28-2012, 11:00 PM
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weeze weeze is offline
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i don't sharpen new blades. the coating wears off very quickly. i've never noticed a bad cut when putting on new blades. usually brand new blades that haven't been sharpened cut even better than older blades that just have been sharpened. it's because the edge on new blades is perfectly straight and at the right exact angle.
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Old 05-28-2012, 11:38 PM
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johnwright238 johnwright238 is offline
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I like a 45 on my blades because i think it lasts longer with not much sacrifice in the cut, but it sounds like I need to take time out and see what works best one day soon.

Thanks guys for the input
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