yesterday I built a paint can forge via instructions on youtube. I used sand and plaster of paris.
I am using a ts4000 bernzomatic torch. today I have fires up the torch and put it in the forge for an hour two separate times. the forge gets orange right where the flame hits the opposite wall but does not heat up like it should or like the ones online with the same torch do. I am hoping the plaster and sand may not be fully dry yet but would think after 24 hours and running the torch in the forge for multiple hours everything should be dry. here are a couple pics of what I built.
https://drive.google.com/open?id=0Bx...zBWTmI0S1pDMmM
https://drive.google.com/open?id=0Bx...zUzSzRsLWo1cDQ
https://drive.google.com/open?id=0Bx...GV5R1BkcjZuT00