David Kirkby wrote:
Harold B. Mandel wrote:
Sirs,
There is a material that is supplied in sheets of varying
thicknesses, colored red, that makes excellent insulating boards.
Does anyone know its trade name or who sells it?
Thanks,
Hal Mandel
W4HBM
_______________________________________________
Tufnol (or similar spelling) is one possibility. You can get it from RS
components in the UK, althouhg they have a international presence. It
is a very good insulator, but not exactly inexpensive if I recall
correctly.
Tufnol is a machinable grade of plain old-fashioned phenolic (Brit:
paxolin).
The big UK electronics distributors like RS Components and Farnell are
incredibly expensive for engineering materials - you should see what
they charge for that extra "i" in aluminium.
--
73 from Ian G3SEK 'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.co.uk/g3sek
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