Sharpening your own chipper blades

[bumble B]

I send my blades away or get new ones, watch what I put through and get about 6 months out of a set. On top of the million and one things I do I'll swallow the cost considering what they earn me.

[Breezeblock]

No, because they are greenmech round ones, I'd like to know if anyone has made a jig to spin them while grinding as the book states though?

look at the way you sharpen green teeth i wonder if you could mount them on an arbor an spin whilst grinding them

[Busy Daddy]

I had a greenmech a few years ago I used to put a bolt with a nut on and put the shaft into a pedastel drill set it going and use an angle grinder

[Busy Daddy]

On the heizohack I normaly angle grind them in situ , but sometimes I sharpen on an old belt sander with a home made jig

The flat disc type machines are far better than a bench grinder and they normally come with a guide

[Nick Connell]

I do my own. Got an old surface grinder off eBay. Works a treat. Doesn't take long depending what's ended up through the chipper!

 

 

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[Drew87]

On the heizohack I normaly angle grind them in situ , times I sharpen on an old belt sander with a home made jig

The flat disc type machines are far better than a bench grinder and they normally come with a guide

 

Same as that Big Daddy .. Find Angle Grinder works a treat with a small grained attatchment .. Plugged into the 230v .. Speedy!!!!

[Sandworks]

Do my own,biggest worry is keeping them cool, and checking weight so they balance well, finish them off on india oil stone with light oil seriously sharp,

Have old blades for nasty stuff…. and charge well for them….

[Charles Hey Arborist]

I want to try this, what size wheel do you want to get the right hollow grind on TW150 blades?

150mm?

 

Thanks

[Suffolk-Matt]

I want to try this, what size wheel do you want to get the right hollow grind on TW150 blades?

150mm?

 

Thanks

 

Since i posted this Ive also got the bug for trying it myself, My bench grinder has a 6" wheel which from my rough measurements didnt give the correct curve to the edge, I would think 8-9" would do the trick.

 

from the jist of the above replies, most seem to not bother with the curve and sharpen the surface flat? I have a good quality stone so can finish by hand.

 

Still interested in any pics people may have of there jigs usings a simple bench grinder

[jomoco]

There's a vital difference between knives that are sharpened professionally under a coolant bath, and those that are not. Mainly that professionally sharpened knives hold their edge much longer because they retain the steels original temper.

 

Jomoco