I was thinking along the lines of a DIY project to make one of these boxes.
One idea was to lay out both pipes side-by-side and wrap them tightly
together with metal flashing. Maybe 1/16" thick copper or aluminum.
And then pack them with sand and bend them into a neat coil. & insulate..
When you did the autopsies, what was the most common cause of failure?
Mineral deposits?
Thanks,
Rich
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