- Joined
- Oct 17, 2018
- Messages
- 922
I need to cut a 9/16-18 thread in a hole in 1/4" thick steel. It needs to be as plumb as possible. What is the secret to getting the tap as plumb as possible so the threads are at right angles to the plate? This is a piece to hold a QCTP in the tool holder on my lathe. I can cut the hole with a drill press, but getting the tap plumb is not easy. I thought it was straight, then I threaded the bolt in it and saw how crooked it was. Any methods, advice would be appreciated. Thanks!