[time-nuts] Thermal insulation choice?

[Chris Albertson]

They sell 4x8 foot sheets of aluminum foil faced foam insulation at
Home Depot.  The thinnest is maybe just under one inch.  Thickest is
about 4" thick.  The other thing is just to make the cabinet out of
wood rather then sheet metal.  Finally in stores that sell camping
equipment you can get roll up pads that are used under sleeping bags.
This stuff is very durable and is designed for insulation.  It will be
a closed cell flexible foam.  I use this stuff inside Pelican type
cases and you can attach it with contact cement.

Can you put something that uses power inside an insulated box? I'd
think it might over heat.



On Fri, Jan 6, 2012 at 11:39 AM, John Ackermann N8UR <jra at febo.com> wrote:
> I am looking for a readily available (from Home Depot or other local source)
> insulating material to use in a chassis that's housing a sensitive OCXO.  My
> goal is just to slow down any external thermal transients so the oven loop
> has time to react gracefully.
>
> I'm thinking of something in sheet form that I could glue to the inside
> bottom and side of the metal chassis.  The trimmed sheet sizes will each
> probably end up being around 4 x 8 inches.  I have enough clearance for a
> thickness of a half inch or so.  I'd like to avoid a bat material as that
> would be hard to mount neatly.
>
> Long lifetime (ie, not getting all crumbly after a few years) is important
> as I don't expect this oscillator to get cold until I do.
>
> Any suggestions of a material to look for?
>
> Thanks,
>
> John
>
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-- 

Chris Albertson
Redondo Beach, California