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HOW TO SHARPEN ROTARY CUTTER BLADES

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RICKY V. HOPKIN

06-15-2002 12:18:54




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IF ANYONE CAN TELL ME WHAT IS THE BEST WAY TO SHARPEN ROTARY CUTTER BLADES, I WOULD APPRECIATE IT. I HAVE BEEN TOLD TO GRIND THE BLADES IS FINE, BUT HEATING AND HAMMERING THEM WILL HOLD THE EDGE LONGER. ANY ADVICE WILL BE HELPFUL. THANKS




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hay

06-16-2002 06:08:21




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 Re: HOW TO SHARPEN ROTARY CUTTER BLADES in reply to RICKY V. HOPKINS, 06-15-2002 12:18:54  
i sharpen like most everyone else. lift up the cutter with the 3 pt. and crawl under with a grinder and have at it. However, i needed to replace them and after about 6 years of not removing the blade i found it was frozen/rusted in place and had to use a torch to remove them. then in addition to buying blades, i had to buy a bolt/nut set also and that was an additional $27. i think it is a good idea to remove the blades every year or so in order to keep the bolts from seizing up. also sharpening the edge is easier in a vise instead of upside down under a cutter. i have to sharpen quite often because of cutting bahai grass and hay is like cutting fine wire and it takes additional power to cut with dull blades. i just wonder if anti-seize compound would work to make removal easier after a year or so? be safe, ya'll.

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PCC-AL

06-15-2002 16:32:59




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 Re: HOW TO SHARPEN ROTARY CUTTER BLADES in reply to RICKY V. HOPKINS, 06-15-2002 12:18:54  
Hi Ricky,
I have two sets of blades for my 6 ft. Bushog rotary cutter. I use my cutter like a big lawn mower on the pasture surrounding my home. I no longer have livestock so I want the old pasture to look like an extention of the yard. Therefore, I want my blades sharp to give a smooth cut as I am cutting only grass.
In the shop, I raise the cutter with the with the tractor lift and put jack stands under the cutter. I welded a short piece of 2 inch pipe with a tee on top on an old socket that fits the blade nuts. I put a pry bar throught the tee and remove the blade nuts. The blades drop off underneath the cutter when I tap them with a hammer and wooden dowel. The blades are easy to sharpen with a 4 inch grinder when held in a vise. I always put anti-seize on the nuts before I reinstall the blades. Good luck.

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Cliff Neubauer

06-15-2002 16:20:05




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 Re: HOW TO SHARPEN ROTARY CUTTER BLADES in reply to RICKY V. HOPKINS, 06-15-2002 12:18:54  
Unless you are using it on your lawn just using a grinder will be good enough. The sharper you get them the more things you will hit with it. The last time I sharpened our blades I went to the field and within a minute I hit an old roll of woven wire buried in the weeds, I'd mowed there 10 times before but I never hit it until I had sharp blades.



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Robert in W. Mi.

06-15-2002 14:26:27




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 Re: HOW TO SHARPEN ROTARY CUTTER BLADES in reply to RICKY V. HOPKINS, 06-15-2002 12:18:54  
Why do you need a fine edge??? It's true, sharp blades will use less HP, but for what you normally cut with a rotary cutter, sharp blades aren't necessary! I take them off once in a while, and sharpen them on a bench grinder, or use a side grinder, but they have to be beat all to he** from rocks before i'll spend any time doing it! Robert



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JohnnyB

06-15-2002 15:24:07




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 Re: Re: HOW TO SHARPEN ROTARY CUTTER BLADES in reply to Robert in W. Mi., 06-15-2002 14:26:27  
Taking the old blades off is way too much trouble for me and my old mower. I flip the mower over, wedge a 2X4 under a blade so it don't move and go to grinding with my big 40 Lb. Black and Decker grinder. Takes about a half an hour. I do mine once a year. Of course I have only a 6' mower and use my forklift to flip it over. I have got some help and two of us flipped it over though.



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bob

06-15-2002 21:29:41




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 Re: Re: Re: HOW TO SHARPEN ROTARY CUTTER BLADES in reply to JohnnyB, 06-15-2002 15:24:07  
just lift the hog up & block it good, then crawl under it & sharpen with hand grinder. I tried taking them off, flipping it but this is the fastest, easiest way, taking all safety precautions of course. Ear mufflers, face mask, heavy gloves. There is plenty of room to sharpen.



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RICKY V. HOPKINS

06-16-2002 06:38:55




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 Re: Re: Re: Re: HOW TO SHARPEN ROTARY CUTTER BLADES in reply to bob, 06-15-2002 21:29:41  
THANKS TO ALL WHO REPLIED ABOUT SHARPENING ROTARY CUTTER BLADES. THE INFO. WAS APPRECIATED. THANKS AGAIN.



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RICKY V. HOPKINS

06-16-2002 06:37:46




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 Re: Re: Re: Re: HOW TO SHARPEN ROTARY CUTTER BLADES in reply to bob, 06-15-2002 21:29:41  
THANKS TO ALL WHO REPLIED ABOUT SHARPENING ROTARY CUTTER BLADES. THE INFO. WAS APPRECIATED. THANKS AGAIN.



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