Steve, I think I'm good. I've got most of an old collet rack already.
The only things I was missing was the actual rack and the hook to hang the
draw tube. I got a hook as well from Fred. The shaft was quite a bit oversized
and I had to machine it down.
The tube is there and I think it is the correct length. The diameter of the pipe is
.672" which is basically 43/64".
The one thing I don't know is the location (or the size) of the set screws used to
lock the rack to the tube.
If you or someone could provide that info, that would be very helpful.
Thanks for the help so far!