Originally Posted by MAD777
Really nice looking sock! I like your PVC now idea.
Obviously it's working well based on your temperature measurements. Well done!
I have a question about the waterproof fabric strip. Did you use 18" on each side for a total of 36" width, or is the total width 18"?
Yes, it was 36" total or 18 (folded in half) for each side. Sorry for the confusion.
I believe it will work temp wise to the teens. I'm planning on putting on a regular piece of loose weave cotton fabric for a cap - that will slow down the heat loss and hopefully also control any condensation that may occur. At one point last night, when I was using my netbook, it got rather stuffy - I believe it was caused by the netbook heating up the interior. There was a gap of about 2 inches at the top of the sock.