Maybe support the osc on beads of RTV. That would both break the thermal path 
and provide a little shock (vibration) isolation. 

Some notebook PCs mount the hard drive in gel for shock. 

-----Original Message-----
From: Malcolm <g0...@aol.com>
Sender: time-nuts-boun...@febo.com
Date: Fri, 6 Jan 2012 19:34:37 
To: <time-nuts@febo.com>
Reply-To: Discussion of precise time and frequency measurement
        <time-nuts@febo.com>
Subject: Re: [time-nuts] Thermal insulation choice?

I would recommend and have used 1/4 inch polystyrene foam that is available in 
roll form from DIY stores and either glue or double sided tape.  It is easily 
workable and cheap and achieves what you want.  There is a caveat in that you 
should also use nylon or other (heat) insulating washers and nylon nuts and 
bolts to attach the oven to the case.  Otherwise you will loose heat through 
conduction and introduce cold spots to the oven

Regards

Malcolm
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