Click on any image to see a full size picture.
The next thing to do was make a proper lid. I have raised the level
of the wall of the rim in order that the refractory will sit proud & fit into the rebate in the furnace refractory.
Here the wet refractory is in the lid & I have made a vent hole
in it with a thin glass jar (not shown).
I have made a Bunsen type burner from plans on
Cameron McKeowns page
I have bored one of the tips (I bought several) to 2mm.
Putting the lid on doesn't help either!
This is it running at about 15psi.
Zero to zorch in under a second.
Patently major overkill for this furnace.