(GTO69RA4) wrote in message ...
One threading chart, as ordered:

http://members.aol.com/gto69ra4/Photos/davis_chart.jpg

A little fuzzy but legible. This one reads a little differently than the newer
machines I'm familar with. Can you help my thick head out with decoding it? Not
having the lathe's complete gear train assembled doesn't help.

GTO(John)


Cut would refer to TPI, No to the setting of the lever on the
headstock, Dr to the driving gear, there is probably a driven stud
somewhere on the back, and LE to the leadscrew gear for that number of
TPI. Not sure what the "Use 16 gear to compound" means, it could
refer to the idler, or to changing the pitches. It would halve the
ratios, or double the TPI if used as the driver gear.