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I'd like to get a tapping head. My "go to" size is 1/4" - 20 t.p.i. but I own a very large range of taps. The idea of the torque bar on some designs doesn't appeal to me. The Hardinge tapping head has no bar to wack me in the face when I'm trying to get close enough to see. Does it self reverse or what does it do when it hits bottom of the hole? Ar there other tapping heads that I should look at?
Thanks in advance.
I have only used the older Procunier heads and have been pleasantly surprised at how well the internal friction clutch cone holds up. I do not frequently use a head to tap larger than 3/8" and very rarely 1/2", so can't say how they work for larger taps. I did a job involving 106 1/4-20SPI tapped holes in aluminum plate, each part, and it was a breeze with a Procunier head on a drill press. Tapping by hand would have been agony, and the job certainly didn't warrant buying a machine with rigid tapping.
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