Tapping Nylon

I'm tapping a 10-32 hole in Black Nylon MD. Also called Nylatron. Drilling
the hole to .161 dia before tapping. Machine rigid tapping. The threads
are very tight. Can hardly screw a screw into it, and the thread gage is
really tight. The material is pushing away from the tap, HS, fast spiral,
bottoming, and then springing back.
I know I could get a H5 tap, maybe not spiral, but that would open up the
pitch dia. What about speed? I tried both 1000rpm and 500rpm, same result.
Tried new tap, same result. With coolant, or without, same result.
Any suggestions? Different fluid? faster?, slower? What about slowing the
feed down, so it doesn't track the tap lead? anybody try that before?
Thanks for the input.
Jon


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Relevant Pages

  • Re: Tapping Nylon
    ... > I'm tapping a 10-32 hole in Black Nylon MD. ... > the hole to .161 dia before tapping. ... The material is pushing away from the tap, HS, fast spiral, ...
    (alt.machines.cnc)
  • Re: Tapping Long Holes
    ... The bar is roughly 7"x1"x1.25" and drilling and tapping the holes ... through the thickness was a good refresher course, ... the hole and started tapping. ... cause the tap to bind/break. ...
    (rec.crafts.metalworking)
  • Gun Tap VS Spiral Tap
    ... in the mean time I have been looking at the various taps and suggestions for use with a tapping head. ... It seems like a regular straight tap like comes in every generic tap & die set can't, or atleast shouldn't, be used in a continuous tapping machine. ... Gun taps shoot the chips forward and are suitable for through hole tapping. ...
    (rec.crafts.metalworking)
  • Re: Tapping Nylon
    ... > I'm tapping a 10-32 hole in Black Nylon MD. ... Also called Nylatron. ... > the hole to .161 dia before tapping. ... The material is pushing away from the tap, HS, fast spiral, ...
    (alt.machines.cnc)
  • Re: synchronous vs rigid tapping
    ... Fanuc G84 tapping = tool comes down to work, feeds in at rate calculated to be correct lead for RPM, spindle reverses and tool comes back out. ... This eliminates the need for tension/compression tap holders, and can often create better and more accurate threads because there's no axial spring pressure on the tap. ... That pressure can make for slightly distended thread forms in soft materials, and can tear the first thread at the top of a hole when the tap is pulled by the holder as it exits. ...
    (alt.machines.cnc)