Checking My Nuts

[Highpower]

(04-28-2015, 08:15 AM)Dr Stan Wrote: 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.

This is the kind of thing that continues to baffle me about using different lathes. My lathe has an imperial lead screw, 8 lines on the dial (4 numbered), but for metric threads once you open the half nuts you are done - game over. They have to remain closed and I run the carriage back in reverse. There has to be an odd gear ratio in there somewhere along the drive train. But I suck at math so......