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Discussion Forum
Show Parts for Model:

How should Bush Hog blades be sharpened?

Author 
Popster (MD)

06-29-2003 20:43:11
66.82.9.11



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The blades on my hog are rounded over. How should they be sharpened?

Thanks!




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Upper Peninsula, Mich

06-30-2003 20:40:22
64.12.97.8



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 Re: How should Bush Hog blades be sharpened? in reply to Popster (MD), 06-29-2003 20:43:11  
Hi Popster. I use the boom to raise the 5' King Kutter and turn it over, then take the blades off and grind them. I weigh them both to assure they are equal. Mine weigh about 10 pounds each. I believe it's important to equalize them, thereby keeping the unit in balance. It's no big problem taking them off, especially if you do this on regular basis. Good time to clean the unit up and grease all the fittings. Good luck and safe tractoring. Ron

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Popster (MD)

06-30-2003 20:34:39
66.82.9.18



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 Re: How should Bush Hog blades be sharpened? in reply to Popster (MD), 06-29-2003 20:43:11  
Thank for the replies! Will tilt it up and sharpen with grinder.

From the replies, I surmising that the blade should be sharpened with only only angel. Bottom of the blade flat and angled toward the top of the blade. Not chisel sharp, but leave at least 1/16 flat on the sharp edge.

Does this sound correct?

Something like this?

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Rob

07-01-2003 03:39:19
63.245.133.39



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 Re: Re: How should Bush Hog blades be sharpened? in reply to Popster (MD), 06-30-2003 20:34:39  
You do not grind on the bottom. You do not shape the blade. You remove mat'l from the cutting edge until you get back to good mat'l and the part of the bottom of the blade that is still flat and not worn. You remove mat'l from the cutting edge at the same bevel that exists. You may have to remove 1/8" or even 1/4" of the mat'l on the cutting edge to get back to where the bottom of the blade is flat because it will be worn and rounded some but do not try to grind on the bottom because you will get all the dang angles changed up and the blades will never be right again.
Out on the ends, maybe the last 1" or 1 1/4" of the cutting edge, you will have to grind more because that is the first place and the place where most of the cutting takes place.
I'll say it another way, the only place you touch the blade with your grinder is on the cutting edge. Just be patient and grind it back to good mat'l and angles.

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rob 8n ks

06-30-2003 13:57:47
129.237.201.64



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 Re: How should Bush Hog blades be sharpened? in reply to Popster (MD), 06-29-2003 20:43:11  
Just one note -- you don't want a razor sharp edge on a bush hog blade, and this is ESPECIALLY true if you cut saplings and brush. Not only will sharp edges not last, a very sharp blade can cut a sapling and create a spike that will go through a tire, or worse, a foot.

You want a pretty steep angle to TEAR the things you are cutting, but tear them easily (if that makes sense).



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souNdguy

06-30-2003 05:36:07
12.92.0.48



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 Re: How should Bush Hog blades be sharpened? in reply to Popster (MD), 06-29-2003 20:43:11  
I did similar to the others.. jack up the hog, sharpen and rotate the blades via the discharge hole. I used a 4" hand grinder ( yes .. it will grind hands... ) and did a nice edge.. then de-bured / finished with a small file.

Cuts great.. but then again.. cut pretty good before too!

Soundguy



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chuck

06-30-2003 05:10:55
205.68.95.65



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 Re: How should Bush Hog blades be sharpened? in reply to Popster (MD), 06-29-2003 20:43:11  
I unbolted my blade and took it to the local machine shop and they ground new edges on it. It cut a little better but not as much improvement as I see when I sharpen my mower blades. I think the large diameter of the blade means the tip speed is pretty high so cutting happens even if the edges are dull.

chuck
436244



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Rob

06-30-2003 03:52:40
63.245.133.87



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 Re: How should Bush Hog blades be sharpened? in reply to Popster (MD), 06-29-2003 20:43:11  
I stood my hog straight up on the 3pt hitch gear and tied the tail wheel to a chain hanging from a low 12" tree branch. Stand up job. That thing stands pretty good on that gear, stable and no chance it will drop with that chain like that. I got it there using the boom pole on my 3pt.
Maintain the same bevel on the blades and try hard to remove the same amount of mat'l from each blade to keep the weight and balance even. Even if one blade doesn't need that much sharpening, you want balance.
When you get them sharp then file the sharp leading edge of the blade. You want a 1/16"+ flat leading edge so that too sharp edge doesn't roll back and undo your sharpening effort. Deburr them with a stone or hardwood and you are fini.
Can't hurt to wire brush the bolts and set screws under there and squirt Knock-er-loose on that stuff and oil or grease or something to seal them because who knows one day you might want to take them apart. Better then nothing at all. Won't take much. Might be a waste of time, won't hurt.

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al

06-29-2003 21:03:30
136.1.1.33



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 Re: How should Bush Hog blades be sharpened? in reply to Popster (MD), 06-29-2003 20:43:11  
Use a angle grinder under the brushog,be careful not to drop it on yourself.I just did mine ,jack up the hog and spin the blade around to the discharge opening and sharpen it with the grinder.



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