knife forge
I have built several single burner propane forges, and had no problems. I just built a two propane burner that is 4" h x 4" w x 20" length on the inside. I can't get the center of the forge to heat metal, even though the thermocouple I installed at the top left corner in the middle says the temperature is 2100 degrees. The burners, when I pull them out and adjust them look fine. I am not sure if the inside diameter is too small or not. The first burner is installed at 7" from the operator opening, and the second burner is installed at 7" from the rear of the forge. The gap between the two burners is approximately 10". If anyone has a recommendation, I would appreciate it. I'm about to try installing another burner at the center position.
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