Todays Project - What did you do today?

[Dr Stan]

(12-02-2017, 10:03 AM)TomG Wrote:

(11-22-2017, 01:07 PM)Robert Wrote: How in the world did you end the thread like that without cutting a relief down to the minor diameter? Do you have a method to automatically disengage the leadscrew?
Robert

An option for non-Hardinge owners is to set the threading tool up on the back of the part and run the spindle in reverse. Then you can feed the tool from left to right to cut a right hand thread and your reflexes only need to be good enough to keep from running into the tailstock.  Sometimes mine are questionable even at that.  

Tom

This is a practice I learned in the Navy years ago and use it virtually 100% of the time for internal threads.  Just make sure you have a cam lock chuck or at least a taper spindle nose type of mount and not a threaded spindle and chuck.