Thanks for the additional link.

I had the problem of stripping some very fine PTFE insulated wire some
years ago, and had to search a bit to find a stripper to do it. It was
fairly expensive, and was a lot like a conventional wire stripper except
that the insulation was cut by means of a couple of blades which
momentarily heated to red hot temperature when they came together over
the wire. I'm sure I breathed some of the resulting fumes, with no ill
effects. I wonder how much exposure is necessary in order to produce the
symptoms listed in the hazard sheet.

In any case, I doubt that many amateurs use a thermal stripper for PTFE.
I do fairly routinely heat PTFE insulated semi-rigid coaxial cable to
around 350 C (700 F) when soldering it. That results in extrusion of
PTFE from the tube, but no obvious fumes. And so far none of the
symptoms listed in the hazard sheet.

I'd think that a Teflon coated frying pan could easily reach 300 - 400
C. What's the function of PTFE in fireworks?

Roy Lewallen, W7EL

Mike Coslo wrote:
Roy Lewallen wrote in
:

Michael Coslo wrote:
You might want to read this one:

http://www.mikeholt.com/documents/mo...FEP2003MSDS.pd
f


I'll take the watermelon over teflon fumes any day.
Although not unheard of, FEP is less commonly found in cables than
PTFE. Do you have a link for the PTFE hazard sheet?

Both are Teflon, which is a DuPont trade name for a variety of related
materials.


http://msds.dupont.com/msds/pdfs/EN/...2f80006d37.pdf

for the Delrin PFTE. It looks like very similar effects. It is something
that this very stable chemical undergoes such a transformation when very
hot.

What bothered me a little bit was that this stuff is used in fireworks.

- 73 de Mike KB3EIA -