FWIW I have used bicycle inner tube before as a quick insulator.
A strip of torch-down roofing works really well also.
Looking goodStill been working on the truck bed. Got the front of the bed painted and set it up on end so I could work on the under side. Welded in a couple patches, painted the rust prone areas with SEM Rust Trap, and topcoated with Gravitex.
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Looking good
Man, you are one thorough guy.
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