erent textures. Therefore, I use a cutting bit, instead. Since the Plexi is a lot softer than metl, you can do some very cool things indeed with cutting bits.
Drill Bits
Drill bits;are grouped into two categories: roller cone and drag (Fig. 11). Roller cone bits are of two types: milled-tooth and insert. They are designed to drill rocks of various types and strengths. The milled-tooth bits are generally used when tooth wear is not a critical issue, whereas the insert bits with tungsten carbide i