I just poured the castable on a vertical forge. Used plibrico brand, 2400 degree rated. They have a 2700° I would’ve gotten if I had known about it. Internal diameter of the chamber is going to be about 7 inches, height about eight or 10 inches. Rectangular door openings on each side, so I can pass through a long piece if I need to. Burner opening at the bottom. I cast the lid as a separate flat piece.
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