This is how I solved the power tapping problem on the cheap. I got a tap wrench that had a socket on top for 3/8 drive. I milled a piece of 1/2 shaft at one end for 3/8 drive. When power tapping and I get to the end of the thread I just pull back the spindle and the drive instantly disengages as the 3/8
drive connection is severed. Let the motor stop, re-engage the 3/8 drive and hit reverse
.
View attachment 337255View attachment 337256