04-28-2015, 08:15 AM
(04-27-2015, 09:19 AM)Highpower Wrote: So again I can only assume that my lathe is geared differently in order to be able to cut imperial and metric threads. It would seem that Ed's lathe is also geared differently from mine based on the threading chart on his lathe. The chart that Dave posted works perfectly for mine and I assume for his lathe also. Ed just had to be a rebel I suppose and go with option #3 for his lathe. But I guess we will never know since he isn't talking...
I think you hit the nail on the head when dealing with a lathe that can cut imperial and metric threads.
The first time I cut metric threads on a Clausing with both capabilities for the life of me I couldn't figure out just what the heck I was doing wrong as I was splitting my metric threads. I finally used only the #1 line (its was graduated with four numbered and four unnumbered lines) and it worked just fine. BTW the Clausing in question had an imperial lead screw.