Well I won't know how well this works but I thought I would post it now that it is complete.
Used a lot of water so I think I will cure it for a month or two prior to firing it up.
Picked up an old coffee brewer for $10.00. I think it might even have worked but did not try that.
While I drink a lot of coffee, I don't drink that much!
Cut off the bottom nut that retained the heating element and just put some duct over the hole from the inside.
Plugged the spout hole the same way.
Had a tapered florist can that was just the right size for the inner mold when suspended from the top of the can.
Added about 2" of plaster/pearlite mix to the bottom. Inserted the florist can and added lead weight so it would not float.
Continued to add plaster/pearlite mix by pouring it down the side of the florist can until full.
Anyhow this one was made with some 3/4" black pipe. Drilled the pipe for several 8-32 thumb screws to hold the torches.
Figured I can use one or two torches as necessary. I can also connect one torch to the grilling propane tank.
Torch position will be adjustable and of course this thing can be modified as needed.
Used pearlite since vermiculite was only available in a huge bag from HD. Found a $5.00 bag of pearlite at Wally Mart.
I have no idea how long the plaster of paris will last in this mix but it should not be too "hard" to re-do.
I filled the lid with the mix also since that was available with the stainless pot.
Should be interesting.