veegee <veegee <at> veegee.org> writes:

>=20
> Hi all,
>=20
> I'm making a small melting tube that can quickly melt wax and pour on
> demand. It's simply 3" long piece of 3/4" copper pipe with uninsulated
> NiCr wire to be wrapped around it. What's the best way to wrap the NiCr
> around the tube without shorting it? One option is high temperature
> manifold paint, but I'd rather find a more thermally conductive (yet
> electrically insulated) solution.
>=20


Teflon tape.  "regular" one can comfortably hold 200oC, melting point of wa=
x
is much less.  Thinking about it, melting point of wax is probably less tha=
n
100oC, if you control max temp of NiCr wire, then almost any insulation
should work.  If you do not control temp of the wire, limit max power, so
that the device slowly comes up to the temperature. =20

Sergey

http://beaglerobotics.com


--=20
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