Hi Guys,
I have been reading this forum for a long time and decided to follow suite and build my own gas forge. I wanted input from some who have them on proper flame adjustment and a question about my plenum.
As for the forge, it is 18 deep by 9 across, a 100 lb propane tank that i cut. 2 -1 inch layers of inswool rigidized and lined with kastolite 30. The floor is greencast 94 and I also applied an ir coating over the entire area except the burner. The burner is the typical wayne coe- john emmerling posting, 12 inches by 3 inches made of mizzou. Its a little big but I intend to use it for heating large stock and working axe heads.
I have posted a couple of pics of it for you to see. The concern I have is that the plenum is getting pretty warm. I did not seal the inside of it with any wool after inserting it but i did pack the outer box holding the burner. Should i Insulate it on the inside? I have not had any flash backs but the warm plenum is concerning to me. My last run was with the ball valve open 1 turn and the needle valve open about 3/4 turn. I can blow the flame off the ribbon no problem so I think I have enough air. Suggestions? Also, today as I turned up the air a bit I was getting a loud hum?
Thanks for looking and any comments are welcomed.