I use alot I mean alot of 1/8 drill bits. I found the machinist Jobber double sided work the longest for me. Get them at Carlisle from a guy next to mitch usually 100 at a time.
I used to buy them too. Papco. But the parts store no longer carries them. For plug welding i drill lots of 3/16 or 1/4” holes. I have an air flanging tool with a punch, works faster than any drill bit, but hole is smaller than i like.
