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Sickle Mower....How do you sharpen blades??

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Em

09-16-2001 07:50:48




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Can anyone tell me how to sharpen the blades on a sickle mower. Someone told me to use compound, but I do not know what compound is, or how to use it. Please help. Thanks....Em




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Red man

09-17-2001 13:58:43




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 Re: Sickle Mower....How do you sharpen blades?? in reply to Em, 09-16-2001 07:50:48  
Why don't you just buy new blades for it, it wouldn't take long to put new ones on. If you shapen the old ones it would be a half @$$ job, just buy new ones



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hay

09-17-2001 05:00:56




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 Re: Sickle Mower....How do you sharpen blades?? in reply to Em, 09-16-2001 07:50:48  
i have a mf#31 dyna cutter and have to unbolt the sickle bar from the head and slide the knife bar out from underneath. then u can use a small grinder to sharpen each section. just be careful to retain the same angle on the knives so it will cut properly.when finished just slide the knive section back in and bolt it up. depending on the degree of sharpening needed and the type of grass you are cutting, you might consider to replace the knife sections when you have the blade out.

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Kermit

09-17-2001 00:16:49




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 Re: Sickle Mower....How do you sharpen blades?? in reply to Em, 09-16-2001 07:50:48  
I have a New Holland 451 sickle bar mower. To sharpen the sickle I remove the bolt from the drive head, slide the sickle out of the bar and either sharpen on a grinder with a sickle grinding stone or my Makita angle grinder. Then just slide the sickle back in the bar and put bolt back in drive head and you're ready to go.



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paul

09-16-2001 20:23:17




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 Re: Sickle Mower....How do you sharpen blades?? in reply to Em, 09-16-2001 07:50:48  
The big V grinding stones are available at some farm supply stores.

Dad used a big wetstone grinder, runs slow, spins in water to cool. These work good. Don't think you'll find any new, old farm sales...

Dad & I both use an angle grinder, 4" or so, but they turn fast & it's _way_ easy to take the temper out of the blade. You _can't_ heat up the metal. Same for using a bench grinder, or the big V stone.

--->Paul

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Alvin NE WI

09-16-2001 19:24:02




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 Re: Sickle Mower....How do you sharpen blades?? in reply to Em, 09-16-2001 07:50:48  
I am a older fart.I had a stone on a arbor shaft and motor, the stone had a v- shape to it and fit the blades to sharpen the 2 edges at once, with some practice. I think a hand held disc grinder would work real good for this job, a 4" would be just dandy, would be able to get right down to the botton easy. I don't even know if the old style stone is available yet. Better yet would be to get a sickle with serarated blades. When the blades get smooth,get a new sickle. With out too much cutting sand and roots and rock, should be able to get 5-600 acres and a set, or a least we do.

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bob

09-17-2001 07:58:10




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 Re: Re: Sickle Mower....How do you sharpen blades?? in reply to Alvin NE WI, 09-16-2001 19:24:02  
just don,t try to sharpen a rough siskle can,t remember but think they were better for grasses If sharping is a task use segerated blade



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old fart

09-16-2001 18:35:32




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 Re: Sickle Mower....How do you sharpen blades?? in reply to Em, 09-16-2001 07:50:48  
40 years ago when I was kid in the U.K. we had an old hand grinder that was mounted to a bench. It had a system where the whole knife was mounted on what amounted to 3 vise clamps that slid in rails. The knife was mounted inte clamps and you would lift the knife and clamps up until the the grind stone which was shaped to fit the 'V' notch between two sections was contacted. Then you turn the crank and grind one side of each of the two knife sections. Sounds complex but really it was a very simple system and didn't take long to sharpen a 7 ft. blade. I haven"t seen one since I came to Canada but I'm always looking out for such things at farm auctions. I dont think it would be to complicated to build this thing, but getting the stone of that shape might be more problematic. Good luck.

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Brian G. NY

09-18-2001 06:03:47




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 Re: Re: Sickle Mower....How do you sharpen blades?? in reply to old fart, 09-16-2001 18:35:32  
I guess I must be an "old fart" too! When I was a kid, every farmer (including my Dad) had one of those crank sickle bar grinders. Like you, I haven't seen one in years; I don't even know what happened to my Dad's, but then, I haven't been to a farm auction in a few years either.



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