Review on 🛠️ Heat Treated Stainless Steel Drilling: A Guide for Straight and Effective Results by Thasapon Bowers

Poor frame corner iron is hard carbon steel that has burned or dulled many of the so-called metal bits I've tried. I am new to carbide drilling and have learned to drill SLOWLY and to use lube and no more than a few pounds of force on the drill press. "Smoke" means "slow down or stop" :) Don't force it! THESE drill bits are much more forgiving than previous cheap "metal drill bits" and after about 50 holes there is almost no deterioration. Now I can even drill 1/4" holes WITHOUT the pilot hole I had to use before. While not recommended, I've even been able to drill holes with a hand drill, although the hardness of these drills I assume means they can be brittle and break due to off-axis forces if I do a lot of it. Bits (not these - haven't tried them) just so you know. Now I'm learning what the different sounds and swirling chips mean if I do it right. [Making 30 clips to hold the fence in place. FYI]