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RE: NST insulations



> Original Poster: "Ed Phillips" <evp-at-pacbell-dot-net> 

<snip>

>	Only trouble is that the stuff shrinks a lot when it cools, and also
>tends to have a lot of voids in it.  I've tried to do something better,
>such as cooling it very slowly and addint more material to fill in the
>hole which forms on top, but never solved the problem of the voids. 
>Good, messy old hot tar is much better.

>Ed

Actually, HV oil is the best and usually the cheapest solution. It's hard to
beat the real stuff at $22.00/5-gallons (Shell Diala-AX). 

Brian B.