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King Kutter rotary cutter blade sharpening

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Frank H.

03-23-2001 07:03:06




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I bought a brand new 5' King Kutter rotary cutter for 3 pt. hitch and noticed the blades were not sharp. You can comfortably run your hand up and down the length of the blades because they are so rounded.

Is this normal for a rotary cutter or should I sharpen them? If I should sharpen them, any advice on technique would be appreciated.

I plan to use the cutter a few times a year on a couple acres of grass and brush. The first cutting might involve brush up to 1" thick.

Thanks,
Frank H.

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Mike L.

04-04-2001 13:56:47




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 Re: King Kutter rotary cutter blade sharpening in reply to Frank H., 03-23-2001 07:03:06  
I mow commercially with 15' rotaries and we sharpen our blades every 400-500ac. Just touch them up on the top side down to about 1/16th inch edge thickness. I agree on brush dull is better, you will get a better kill if the stumps are shredded. Really you could turn the blades backwards and other than taking a bit more power you won't see much of a difference on taller stuff. good luck,



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rhudson

03-23-2001 20:00:59




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 Re: King Kutter rotary cutter blade sharpening in reply to Frank H., 03-23-2001 07:03:06  
Frank, we grind them with a 4 1/2 inch side grinder, grind on the upper side only, just like a lawn mower blade. support deck with a set of jack stands, tractor not running. gloves, goggles lock the blade to keep it from rotating. every few decades purchase new blades



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george

03-23-2001 14:35:04




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 Re: King Kutter rotary cutter blade sharpening in reply to Frank H., 03-23-2001 07:03:06  
Frank:

They do not need to be razor sharp to cut...consider a weed trimmer string (it's round). If you are cutting in stones/stumps/large brush, the blades will dull faster if thay are sharpened to an edge. This is not a finish mower, it's a brush mower...the cut will not be as clean.



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Ray,In

03-23-2001 20:04:16




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 Re: Re: King Kutter rotary cutter blade sharpening in reply to george, 03-23-2001 14:35:04  
I would not sharpen it the first year. A dull blade will shatter and fray the brush trunk and aid in killing it, and when cut cleanly, it will puncture a tire,$$$$$, more easily next year. When the brush is gone, sharp blades will give a neater look, and pull easier. I use a 4'Woods brushog to mow a vacant lot for a friend and it looks as good as his yard.



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