Building a Blacksmithing Forge out of an Old Propane Bottle

[Spira Knives]

Hi everyone, I‘m back!
Since I‘m a student, my builds and tools are all low budget and mostly self made. This also applies to my blacksmithing Gas Forge.
It’s a simple build and works perfectly! As insulation I‘ve been using Ceramic wool and a special refractory cement. This makes the heat mostly stay inside the bottle. While it’s about 1200C ( 2200F) inside, I‘m under 100C (212F) on the outside.
I‘ve been using this forge for many hours now, it burned way less gas then my first test setup and stays hot for hours after the burners are shut off.
This makes it good for heat treating blades as well!
As always, thank you for checking it out, if you’ve got any questions, feel free to ask!

Have a good one and keep forging!