Sharpening Your Specialty Drill Bit To sharpen the step bit, you can use a cone-shaped grinding bit with a Dremel. You should work on the smaller of the two faces inside the notch of the step bit.

Basically, I'm trying to cut through the detachable service panel on my Dragon and I've only made an 8 inch incision on the bottom, and I went through 3 dremel grinding bits. These are the small ...