Ok, there has been a couple replies suggesting aerogel. I've read a bit
about it, and understand that it's extremely light and effective, but quite
difficult for a hobbyist to make. Also, probably very expensive. Is there
a source for very small quantities of it? Is is flexible enough to wrap
around a cubical or cylindrical object without destroying it?
I've considered fiberglass as a cheap, available insulation, and will
probably be what I use to repair my oscillators.
I'm very leery of trying to use Great Stuff household foam insulation. I
just don't want to risk having another failure because of it.
Cheers,
Dave M
Brian Inglis wrote:
On 2015-02-22 17:42, Charles Steinmetz wrote:
Brian wrote:
Thought of trying aerogel insulation?
Dust free varieties avoid handling issues.
Be careful not to over-insulate the oven -- it depends on a certain
amount of heat flow to ambient to balance the heater. The stability
of the heater control loop depends on having the correct amount of
thermal resistance from oven to ambient (also, on the thermal
resistance being distributed similarly to the original scheme).
R-value for commercial aerogel insulation is about double rigid
polyurethane insulation, so half the thickness would be about right.
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