Well Insulated Gas Forge 🔥

Making a propane gas forge for blacksmithing. Uses the same venturi burners I made for my smelting furnace, video about those here: Forge construction from outside in: Steel water pressure vessel tank 5cm thick ceramic wool High allumina castable refractory Refractory bricks for inside base and doors The ceramic wool is glued to the walls with specific ceramic wool glue and rigidized with colloidal silica (tinted blue with food coloring to check covering).