I noticed a guy using a black permanent marker to mark the end surface of a drill bit before sharpening it with a Drill Doctor. I have used a marker to paint a chisel surface before sharpening the chisel. Anything wrong with it? Anything better?
Thanks.
You can use anything that leaves a mark. I wouldn't use Prussian blue because of the mess, though. You just need to see where you've been and what you missed.
Stan
when i'm grinding down or polishing glass, i use marker or even a dab of rattlecan spray paint.
So one can recognize the sharp end, one supposes :-)
Could a marker act as a lubricant, too?
Just guessing.
I have used a marker when sharpening with the Drill Doctor to determine when I have sharpened the full edge but not the full area behind the edge. When you have established the relief angle, whats the point of further grinding?
Copper
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