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antekboodzik
Oud Junkie
Posts: 109
Registered: 5-24-2010
Location: north poland
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It is very hard to find a decent hand cranked grinder. I tried a few times with old, vintage ones, but all of them were damaged with no sufficeient
care or too worn to use properly, and all of these ended in the trash.
There are also cup grinding wheels - do they apply for use with hand grinders?
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jdowning
Oud Junkie
Posts: 3485
Registered: 8-2-2006
Location: Ontario, Canada
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It might be possible to refurbish an old worn hand grinder by machining the shafts smooth, boring out the bearing castings oversize and press fitting
standard sintered bronze bushings that would then be reamed to be a running fit for the shaft - but likely not worth it unless you have the tools (and
skill) to do it yourself.
There are slow speed motorised grinders on the market designed for grinding carbon steel tool blades (sometimes combined with a conventional high
speed wheel). Relatively costly I imagine.
Here is one example
http://www.busybeetools.com/products/GRINDER-10IN.-WET-BENCH-CSA.ht...
I am not aware of cup grinding wheels being fitted to hand grinders.
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antekboodzik
Oud Junkie
Posts: 109
Registered: 5-24-2010
Location: north poland
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Finally managed to find decent, not worn or battered hand cranked grinder 
In fact, it seems it was never been used. I got it on a some yard sale, and after putting some grease and oiling it a bit, and fitting new stone it
runs surprisingly well, with minimal "wobbling" of the stone, and very quiet. The only thing I have modified was adding a few washers to lock a kind
of a "clutch" on the crank - didn't like it at all. Working with it is easier and faster than I expected to be, and shaping this M2 steel blank was
not so big effort. I hope it would be nice woodturning skew chisel.
And the coolest thing is, that the grinder and a stone for it cost me about 1/10 of a price of the cheapest power bench grinder.
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