john niolon wrote:
> the fiberglass tubing will work fine... any electrical supply house
> should have it in rolls... don't know where you are but
Thanks for all the tips on the insulation. A friend also suggested the
car parts place, which I hadn't considered.
I got the oven going with a temporary fix. I used teflon pipe tape on
the wire; figured this would handle the voltage and heat. Then put
some rubber fuel hose over that as a standoff from any hot parts. It's
good for under-hood temps, and I expected it would smoke a bunch before
igniting.
With the oven working, I did some semi-destructive testing that may be
of interest. I had four materials: teflon pipe tape, heat shrink
tubing, vinyl electrical tape, and rubber fuel hose. I put then in the
oven on aluminum foil and cranked it to 250dF.
250dF: heat shrink tube shrunk, all materials intact
350dF: electrical tape melted, fuel hose smoking lightly (removed them
from test)
400dF: heat shrink "sticky" and starting to melt, but no worse than
when normally heating to shrink (removed from test). Teflon intact.
450dF: Teflon intact.
500dF: Teflon intact.
So I think I'm gonna leave the teflon on there, and just find some
fiberglass sleeve to go over it for mechanical strength.
After the testing, I remembered I have that clear green masking tape for
powder coating. It's good at 400 - 450 in the PC oven.
-Wayne
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