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[thehomeengineer]

Using a friction clutched tapping head for threading bolts/studs etc.Hi
this is an archer tapping head. In my opinion one of the best friction tapping heads ever made. I made a die stock so it could also be used for external threads. There are several sizes of tapping chucks in the range. At the morse taper end there is a nut which tightens down with a c-spanner onto two friction plates and steel washer this clutch is set to drive the tap, but if the tap jams the clutch slips as the spindle rotates and the chuck stops, stopping the tap from breaking. Hope this helps
The home engineer