Drill bits

[vectorit]

Originally Posted by markeb01

Best results I've had drilling up to 1/4" thick steel was using the cheap step drill set from Harbor Frieght:

http://www.harborfreight.com/3-piece...lls-91616.html

I start with a pilot hole and use lubricant. I've been using the same set for about 3-4 years, and only recently burned up one step on one of the bits.

Thanks guys so far for the input on this! As simple as one would think about just drilling a hole into steel, I know there has to be a proper technique to it to get the best results.

I've never used step drills? Would this type of bit be sufficient to drill into a frame rail? I always thought they were more for thinner stock?