- Joined
- Aug 4, 2012
- Messages
- 25
I have to put a 10mm x 1.0 thread in a Brian Rupnow vertical engine head. I sent for the tap and it should arrive in a week. My problem is I don't have a 9 mm drill,which it calls out as the drill size.
I'm going to use a Letter "T" drill that I have. Is this close enough? I have every drill size known to man ,but not one Metric in my collection. Also I messed up my head by using the wrong 40° angle to cut it. I should of used the 40° from 180° not off of 90°. Stupid mistake I've made before in my 40 years of either working in a company machine shop or my own shop. I should of used a test piece instead of the real one. Some day I'll learn. Boot
I'm going to use a Letter "T" drill that I have. Is this close enough? I have every drill size known to man ,but not one Metric in my collection. Also I messed up my head by using the wrong 40° angle to cut it. I should of used the 40° from 180° not off of 90°. Stupid mistake I've made before in my 40 years of either working in a company machine shop or my own shop. I should of used a test piece instead of the real one. Some day I'll learn. Boot