HELP! Best chipper blade sharpener

[Kitcuts]

I am looking for some advice if anyone else sharpens their own chipper blades. What system do you use? My employer purchased a grizzly, universal knife sharpener, and I’ve tried to get super low grit stones for it. I found some at 60 grit and I’ve got some from Amazon that are 30 grit, but it really doesn’t seem to do a great job of sharpening them quickly. You can’t make much progress. It takes about 30 minutes per side to get them to be one cohesive sharpening thank you very much.

 

[EFSM]

I am looking for some advice if anyone else sharpens their own chipper blades. What system do you use? My employer purchased a grizzly, universal knife sharpener, and I’ve tried to get super low grit stones for it. I found some at 60 grit and I’ve got some from Amazon that are 30 grit, but it really doesn’t seem to do a great job of sharpening them quickly. You can’t make much progress. It takes about 30 minutes per side to get them to be one cohesive sharpening thank you very much.

We use an ancient Michigan Knife Company planer/chipper knife sharpener from the 80s or before (I guess I’m showing my youth by calling that ancient). It’s similar to this on that sold on auction except ours doesn’t have the auto feed. This is not a fast machine either, and sharpening can take a while, especially if there is a huge gouge in a blade. https://www.laibids.com/auctions/31154/lot/171362-michigan-industrial-knife-grinder-model-36af

 

[Kitcuts]

We use an ancient Michigan Knife Company planer/chipper knife sharpener from the 80s or before (I guess I’m showing my youth by calling that ancient). It’s similar to this on that sold on auction except ours doesn’t have the auto feed. This is not a fast machine either, and sharpening can take a while, especially if there is a huge gouge in a blade. https://www.laibids.com/auctions/31154/lot/171362-michigan-industrial-knife-grinder-model-36af

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Thank you verry much I’ll look into it

 

[EFSM]

Thank you verry much I’ll look into it

Michigan Knife Company has been defunct for years, but if there is another product made similar, I would be looking at that.

 

[dangerousatom]

What chipper is it? There are many blade configurations depending on the size.

If its a big commercial chipper with the 6-8" long planer looking blades. Id say a machine tool grinder like this if its got a slow rpm setting:
https://bullseyeindustrialsales.com...d-carbide-tool-grinder-9-x-22-tables-230-460v
or
an old surface grinder that has a mounting surface that is angle adjustable.

https://surplusrecord.com/listing/6-x-18-harig-618-surface-grinder-1-5-hp-3425-2800-rpm-208-230-460-v-1018929/?utm_source=google&utm_medium=organic&utm_campaign=shopping&product_id=1018929&srsltid=AfmBOooBJyeMbgbzRKYMNjrJTYOiKXdYg7uDOsES8zDSnivPXZSviI2b_mc

Either one needs to have enough rotational mass or torque to not slow down when making passes at low speed. You need low speed to not take out the temper on the chipper blades, and the settable bench angle so that all the blades are relatively the same when sharp so the chipper head isnt out of balance.

Id personally look into a local machine shop or some place you can mail a set out to, and have it done. Get a second set of blades to just rotate through if its more then once a year, ....unless you have a fleet of chippers that your constantly sharpening blades?