Hey folks, long time lurker first time poster. I'm about halfway into a propane tank forge build with a pair of 3/4" Frosty T burners and have been perusing IFI mindlessly for the last couple weeks absorbing all the information I can.
I'm planning on following Wayne build guide, which is essentially a 20# propane tank forge with the flat bottomed chamber. The entire tank is cut lengthwise following a line drawn across the opening of the collar, which is roughly 1/3 from the bottom of the 7" dia collar circle.
For the bottom "half," he advises to use 2 x 1" layer of ceramic wool then