Darrin Sanders
Moderator
Here is a good video for those of you with questions about types, coatings, & angles of drill bits. This video gives you the information needed to properly select drills for your needs. The only thing that I will add is that no matter what type of drill you choose, using the proper speed & feed rate is VERY important to insure that you get the most out of your drills.
Anyway, here is the link.
Anyway, here is the link.