- Location
- Lakeside, CA
Similar times. They go through rotors like butter, used them to re-drill 5x4.5 into WJ rotors with 5/8" holes. Depends on the angle of the hole, you center punch the center of the hole, then lightly apply pressure. The video shows them punching holes in tubing pretty quickly. I've used them for punching through 1/4" and 3/16" plate all the time. The small set which goes from 5/16" to 3/4" was about 60 bucks, once you get a set you won't go back to twist drills, and if you do, you'll want to get a good set of twist drills like norseman or something.
Here's 7/16" hole in .250 plate I did for my bumpstops. Bit hits the plate at 48 seconds and is through at 54 seconds. I love these things.
https://www.youtube.com/watch?v=wxzPwu2JUgc
Here's 7/16" hole in .250 plate I did for my bumpstops. Bit hits the plate at 48 seconds and is through at 54 seconds. I love these things.
https://www.youtube.com/watch?v=wxzPwu2JUgc