I have actually been wondering the same thing.I read the post but I couldnt get the pics to load.I did read that plaster once dry is nontoxic.I have this huge tub of plaster pwder and wanted to try something like putting the heat cable through it but need to talk to some electricians to find out if being encased in plaster would cause problems.
I got the impression from the one post that plaster spreads the heat nicely.I will definitly try and find out.If you find any info let me know..Cc
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