Re: 23 series windshield wiper assembly?

Posted by HH56 On 2016/1/26 13:41:43

Not actually sure what the original support material was or how much of it you actually need but this is modern material that should work. 6x6 inch sheet of 1/8 thick material rated to 335 degrees.http://www.mcmaster.com/#8710k537/=10uowjp

If you need a different size or thickness you can find them on the high temperature Garolite page. The Ultra high temp stuff is good for another 90 degrees and also available but considerably more expensive. No idea how hot those resistors get compared to ordinary resistance wire. As you can see in one of the photos BDeB posted, for the most part the resistance wire items were supported on paper based phenolic materials. They do have a lot of air circulation though.

I've used various forms of Garolite and just cut it with my bandsaw or jigsaw. It is somewhat abrasive but does work with ordinary steel tooling. For a lot of machining or drilling then cobalt drills or carbide tooling more commonly used for hard metals is recommended.