"DoN. Nichols" wrote in message
rvers.com...
According to Harold and Susan Vordos :

"Andrew VK3BFA" wrote in message
oups.com...
snip----

Still dont know what an
ACME thread is. Have a small Unimat lathe

If your Unimat has a lead screw, chances are good it is an Acme thread.
The thread has an included angle of 29 degrees, and the root and crest
is
flat.

Not based on my old Unimat SL-1000. That one used plain M6x1.0
threads for all leadscrews. (And M12x10. thread for the spindle nose
and the duplicate one on the tailstock ram.)

But I agree that it *should* have Acme threads.

Enjoy,
DoN.


Chuckle! Just goes to show how much I know about those little suckers! No
way would I have imagined otherwise, although I did leave the door open for
the possibility ("chances are good:").

Shocking, really. The little 109 Craftsman I purchased as a boy, at a
whopping $49, new, had an Acme lead screw.

Harold