Interestingly enough on his video Turning Wood with Richard Raffan, Richard recommends a quick hit on the bench grinder and back to work, because you will be back to the grinder soon enough. He is a professional woodturner with a lot of experience.
I sharpen on a bench grinder and sometimes knock the burr off with a whetstone. If you rub the bevel of the tool on the wood, it will present just the cutting edge and shear, not tear the wood in addition, the bevel burnishes the wood slightly to where you need to hit it with sandpaper to get paint to grab.
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