I was about to make a tapping stand and then thought about how it would be used.
Mostly after drilling on the Mill or Drill Press I would tap the holes or use the small
brass threading adapters in the previous thread. Now I already had two Irwin
tap chucks that were designed to be used with 3/8" socket drive handles or ratchets.
These chucks hold very well and I tested the run out in my lathe which was about .004".
So I thought it was worth making another tap adapter for the Mill and Drill Press so that
I would not need to make the tapping stand. Well here it is:
3/8 drill rod for the arbor that will fit in the chuck.
3/8 drill rod for the long and short tommy bars. Why two bars? Well one for smaller taps and
the long one should be good up to about 1/2".
One 3" chunk of Hot rolled for the main housing. Turned it to 7/8" then added the square end
for entry into the Irwin chuck. Drilled and reamed the housing 1.5" deep for the arbor and then
cross drilled and reamed for the tommy bars.