Kenre
Cast Iron
- Joined
- Apr 25, 2007
- Location
- Melbourne Australia
Just busted 2 spiral thread taps, 3x.5mm
Going 8mm deep into a 9mm deep hole in 6061 T6. Tried straight in and out and also with 4mm pecking depth, 3mm retract.
I was able to remove both taps thankfully, and both had flutes full of swarf.
I have done 100s of these no peck with a straight 3 flute bottoming hand tap! with zero issues same setup and machine, Robodrill. Just finished the job with the same original tap.
Spiral taps i know are fragile in the reverse direction, which is when they seemed to break, but thought this would be no problem.
Are they not good in smaller sizes?
Going 8mm deep into a 9mm deep hole in 6061 T6. Tried straight in and out and also with 4mm pecking depth, 3mm retract.
I was able to remove both taps thankfully, and both had flutes full of swarf.
I have done 100s of these no peck with a straight 3 flute bottoming hand tap! with zero issues same setup and machine, Robodrill. Just finished the job with the same original tap.
Spiral taps i know are fragile in the reverse direction, which is when they seemed to break, but thought this would be no problem.
Are they not good in smaller sizes?