Hi fellas,

I have been reading a lot online (and searched here) and haven't seen anything exactly answering this question: Is a perlite and sodium silicate (water glass) insulation, followed by 1" ceramic wool, lined with high temp mortar a good solution for a 20 lb propane bottle forge?

I keep reading snipits of references to avoiding perlite, but if it's got ceramic wool protecting it, that should be sufficient, no? I only have a small amount of ceramic wool (not even sure which brand), but I bought a gallon of water glass and two bags of perlite, and just looking for my vessel now.

I'm also building a burner roughly from Zoeller Forge plans. BTW, somebody warn me if it's a bad idea to solder a copper MIG tip to black pipe or brass pipe. I'm struggling to find all the right sizes and wall thicknesses for the pipe (but am smart enough to avoid galvanized).

Cheers,
Atchbo