Can I use a single speed grinder at 3450 rpm (vintage Craftsman) to sharpen turning chisels? If not, what is the best recommended speed for touching up the tool edges?
Thanks,
Brian
Can I use a single speed grinder at 3450 rpm (vintage Craftsman) to sharpen turning chisels? If not, what is the best recommended speed for touching up the tool edges?
Thanks,
Brian
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Replies
I would guess that most turners use a high speed grinder for this task.
Personally, I prefer a disk sander and freehand on 240 grit for touch-ups (grind on 80).
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This produces a razor edge.
Regards from Perth
Derek
bmy,
Using one of the white or pink colored soft wheels on the grinder will reduce the possibility of overheating the tool's edge and drawing its temper. Of course, if your tools are high-speed steel, they are more immune to that problem.
Ray
Sure. That is the only thing I sharpen turning tools on. Straight from the grinder to the wood, it is all you need.
If you are only sharpening the chisel, then probably. If you will be doing any serious grinding to remove chips and such, you'll need ot be very careful about heat buildup in the chisel point.
Too much heat will quickly affect the temper of the steel -- not a good thing.
Politics is the antithesis of problem solving.
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