resonance at wildblue.net
Sun Jan 18 12:24:56 MST 2009
Dolphs makes some potting insulations that may work for you. 3M also makes
On Sat, Jan 17, 2009 at 4:42 PM, Ed Phillips <evp at pacbell.net> wrote:
> Does anyone know where to get the type of black "tar" used to pot
> transformers? Does anyone know the actual temperature at which it's poured
> into the transformers? Did a web search but got nowhere and suspect that
> roofing tar or pitch probably isn't suitable. I want to pot a couple of
> GMHEI transformers in a cylinder to simulate the secondary of a "spark coil"
> and don't want to mess with oil or the like. Paraffin wax doesn't work, at
> least for me, because of too many bubbles - I've tried pretty hard to get
> rid of them [with the exception of vacuum] without much luck.
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> Tesla at www.pupman.com
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