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anyone sharpen sickle blade knives?

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classicxl
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PostPosted: Sat Mar 22, 2014 2:42 pm    Post subject: anyone sharpen sickle blade knives? Reply to specific post Reply with quote

Was wondering if anyone has had luck sharpening
blades either on sickle mower or haybine, and what
is best to use, ive got a spare cutterbar with a
lot of dull knives.
 
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kevinj54
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PostPosted: Sat Mar 22, 2014 3:12 pm    Post subject: Re: anyone sharpen sickle blade knives? Reply to specific post Reply with quote


I had to do one last year and used a fine flap wheel on the 4 1/2" grinder.
 
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Alan K
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PostPosted: Sat Mar 22, 2014 3:25 pm    Post subject: Re: anyone sharpen sickle blade knives? Reply to specific post Reply with quote

My dad had a special wheel to put on the old grinder in the shop for sharpening the ones for the sickle mower. It was tapered upwards in the middle so it fit in between the sections. I still have it and use it some. It workes ok to get by a while rather than replacing all the sections. What do you have for implement?
 
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Pitalplace
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PostPosted: Sat Mar 22, 2014 3:27 pm    Post subject: Re: anyone sharpen sickle blade knives? Reply to specific post Reply with quote

I have my dads old sickle sharpener. If you are located close to NE, you could come use it.
 
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classicxl
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PostPosted: Sat Mar 22, 2014 3:30 pm    Post subject: Re: anyone sharpen sickle blade knives? Reply to specific post Reply with quote

489 new holland haybine
 
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55deere70
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PostPosted: Sat Mar 22, 2014 4:31 pm    Post subject: Re: anyone sharpen sickle blade knives? Reply to specific post Reply with quote

As long as they are bottom serrated sections you should be able to sharpen them. I use don't use top serrated sections because you can't really sharpen them with any success. I use a 4 1/2in. grinder.
 
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DeltaRed
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PostPosted: Sat Mar 22, 2014 5:19 pm    Post subject: Re: anyone sharpen sickle blade knives? Reply to specific post Reply with quote

You can even 'sharpen' top serated.They wont last as long,but they will get you by.Sharpen some and find out.Just use a common 4 1/2" grinder
 
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Don-Wi
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PostPosted: Sat Mar 22, 2014 6:46 pm    Post subject: Re: anyone sharpen sickle blade knives? Reply to specific post Reply with quote

For how quickly you can replace the sections with new and use bolts, I'd just replace them.

Donovan from Wisconsin
 
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504
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PostPosted: Sat Mar 22, 2014 7:34 pm    Post subject: Re: anyone sharpen sickle blade knives? Reply to specific post Reply with quote

I have a sharpener in the shed, want to buy it?
 
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donjr
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PostPosted: Sat Mar 22, 2014 9:27 pm    Post subject: Re: anyone sharpen sickle blade knives? Reply to specific post Reply with quote

Back in the day when I still had a sickle type haybine, I learned I was quicker just replacing the sections than sharpening them. I had a jig set up that all I had to do was place the section in a slot on it, and shear the rivets by hitting the rear edge of the section with a hammer. Flipping it flat, the old rivet punched out of the back through a hole in the jig. New rivets and sections were placed on the back, and riveted into place with an air impact gun and a bit with a dimpled end to form the new rivet head. I usually had to rebuild several knives a year, and found it only took about an hour to do it that way.
 
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Shetland Sheepdog
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PostPosted: Sun Mar 23, 2014 4:46 am    Post subject: Re: anyone sharpen sickle blade knives? Reply to specific post Reply with quote

Trade up to a discbine! LOL
Seriously, I use a 4&1/2" grinder, but I've seen old timers use a flat file!
I also have one of those "handy dandy" tools for replacing sections without removing the knives from the cutter bar.
Edit: Just to clarify what we're talking about
Section = triangular blade attached to knife/knives
Knife/knives = moveable bar that sections attach to
Cutter bar = stationary bar with fingers/guards that knives slide into
HTH, Dave
 


Last edited by Shetland Sheepdog on Sun Mar 23, 2014 4:54 am; edited 1 time in total
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Bret4207
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PostPosted: Sun Mar 23, 2014 4:55 am    Post subject: Re: anyone sharpen sickle blade knives? Reply to specific post Reply with quote

I bought a 2nd knife assy. I go through and replace ALL the knives and use the bolts. I also use the time the knife assy is out to check the guards and replace any that are or bent or otherwise screwed up, then I line all of them up with a string. Check all the hold downs too. Makes a big difference.
 
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Dick2
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PostPosted: Sun Mar 23, 2014 6:10 am    Post subject: Re: anyone sharpen sickle blade knives? Reply to specific post Reply with quote

When I was a kid I used to turn the crank on the grinder while Dad sharpened the sickle blades. It took years before we got a grinder with a motor to sharpen sickle blades. The stone was "V" shaped so you could sharpen two sides at once. Haven't seen a "V" shaped stone in years, but they are probably still available.

I haven't tried it, but I think you might be able to sharpen blades with a 3" or 4" angle grinder.
 
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Roger in Iowa
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PostPosted: Sun Mar 23, 2014 6:46 am    Post subject: Re: anyone sharpen sickle blade knives? Reply to specific post Reply with quote

Don't forget to sharpen the edges of the guards if they are rounded or replace them if too worn!

Also helps to sharpen the tip of the guard down to a pencil point.
 
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Leroy
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PostPosted: Sun Mar 23, 2014 12:27 pm    Post subject: Re: anyone sharpen sickle blade knives? Reply to specific post Reply with quote

Cannot understand anyone NOT sharpening them. With the price of the sections it does not make any sence to me to change out sections that only need a touch up sharpening.
 
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