A Treasure of Free Homemade Gold Prospecting Equipment Plans and Commentary: Build Your Own Thermos Bottle

Blue Bowl Concentrator

Tuesday, September 23, 2014

Build Your Own Thermos Bottle

Here is an article showing how to make your own thermos. Not sure how practical this is for most of you, but this seems a way to make a pretty good one using a standard plastic water bottle and a 2-liter bottle. Epoxy is the insulator.
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