Todays Project - What did you do today?

[f350ca]

Would you believe just really quick on the half nut handle? 
As Ed said, a Hardinge takes all the skill out of threading. The auto feed stops within 3 thou by their spec, but I've checked it with an indicator and its closer to 1 or 2. The compound even has a lever operated quick retract for the tool. You never release the half nuts, just forward/backward with the direction lever.
That thread was cut at about 600 rpm.
Had to cut a relief after to get allow the female thread to shoulder up.
As said, no skill required, try cutting these internal and externals on a regular lathe, I'd be pulling my hair out.


The recess on the male threads was for an O-ring