I purchased a Tormach T/C Tapping head a few weeks ago to tap a bunch of 6-32 holes but I'm breaking taps every 10th hole or so. I tried Sowa spiral point and spiral flute and both are breaking on me.
I noticed my T/C tapping head is smooth on the downward float compression but binds 1/3 way up on the upward float compression. I'm wondering if this is normal.
Can someone with a T/C tapping head check theirs to see if theirs work the same way?
I've already got a email to Tormach but I think I won't get a reply until Monday being Thanksgiving.
Also... how tight should the clutch be set? I noticed on the downward tap... it goes down smooth but on the upward, the float is working more and my tap seems to be breaking at about 1/3 way up on the float (where the bind is).
See video for more details.
http://youtu.be/MS7B0VEhm5c
Thanks!
Ken