Thread: Drill bit for scales

Originally Posted by sharptonn

I would suggest if you are drilling pin holes in bone, ivory, bakelite, or other hard, brittle materials to use one of these by hand and go slow. You can feel your progress and back up as needed. A fast spinning drill can crack scales if a snag is hit, particularly as the bit goes through the bottom. While a slow process, it also gives a way to correct angle as you drill.

What are those called