In Reply to: drill bits posted by Al in texas on December 22, 2018 at 12:44:08:
its been my experience that all drill bits are made the same. only difference is the steel they are made of. Buy carbide steel bits and a Drill Doctor. The carbide will out last titanium and all the other and when they do get dull you can resharpen them instead of throughing them away. Use 116 degree angle if using a hand drill. 135 if using a drill press or lathe.