HomeRoast Digest


Topic: Insulation (3 msgs / 75 lines)
1) From: Jason Brooks
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Folks,
	I'm reassembling my WBP1 after having it in pieces for a while to
reassemble a worn and broken heating element.  I was working on
reassembling it tonight (those newer, weaker brethren of the P1 are no
match).  Well, the insulating layer between the metal base and the
element is due for a replacement - it's fractured, and I don't trust it
to reliably insulate anymore.  Suggestions for replacing?  Alternative
materials?  Sources for original (mica?)?  Hopefully I can find
something at a hardware store or an electrical supplier here.
Thanks,
Jason
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Jason Brooks
jbrookshttp://javajeb.wordpress.com- -------------------------------
Enjoying good coffee in the Heart of Virginia
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2) From: raymanowen
Mica itself is not the best insulation medium. Even if it has a fracture, it
won't be much worse as an insulator.
It will be just fine if you can reassemble it like a puzzle.
An alternative would be to use a fiberglass mat to replace the mica, and use
ceramic insulating tubes and beads to electrically insulate the Nichrome
heating wire. Don't get carried away, because the more you enclose the wire,
the hotter it will get while yielding fewer BTUs to the air/ roast.
Sears appliance repair, W.W. Grainger, Johnstone Supply, hardware stores
have this stuff.
Cheers -RayO, aka Opa!
Got Grionder?

3) From: Jason Brooks
I think I'll try to piece together the mica.  I might even try to
reassemble after the heating assembly is in situ, as to avoid the buggered
bare spots.
The fiberglass & ceramic is definitely further than I want to go just now.
Thanks,
Jason
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-- 
Jason Brooks
jbrookshttp://javajeb.wordpress.com


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