I protect my pan with a thiick layer of black sludge lol.
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On my Crossfire, at the bottom of my pan sits a piece of 1/16" SS sheet cut to fit, it is lifted off the bottom of the pan by a bunch of spaced out 3/8 SS nuts so water can flow in and out around the sheet. This acts as a “Blast-shield” at the bottom. Has been there from inception and works great, without any issues.
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This kind of “sacrificial” heat absorber is a great idea, just make sure that air bubbles that get trapped under it have places to exit (maybe a slight ^ v ^ v bend pattern with slits cut at the top of the ^'s?) such that you always have water beneath it to attenuate the plasma. The issue is, it doesn’t protect the seam/flange of the OEM 2 pan water table without making the water depth shallower there.
I followed in the footsteps of BD, making my own single volume pan from 16ga stainless with a single centralized drain. Made the side flanges as tall as permissible without raising the Y axis. I don’t do much work out in my garage during the blazing summers here in SE TX (because health things), so I wanted a way to reliably and quickly drain and refill my table for cleaning (and anti-sludge/algae/grossness reasons).
I’ve posted this in a couple different threads, but my reservoir / filter / pump system:
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I also did a liner in my pan which helped, but those air bubbles are a definite thing. I hear air bubbles for quite a while after filling. My issue was the seam, slow 65 amp passes in 1/2" caused issues. I’m in the process of building a single piece table with more depth, which involves new risers, but I’m hoping it’ll make it so I can run 65 amps more often.
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