UPDATES!
So!
Situation changed a bit, so I won't be building a whole shed at the moment but I do have a forge now!
The stages so far
Table with cinder blocks for spark/ember control (bad idea)
Hammered rebar as a test
Removed cinderblocks and framed a crappy plywood box to keep things protected from the elements
P.S. if you're reading this for some reason, do not use CMU or concrete as an insulator for extreme heat, that shite holds water and thus could explode like an egg in the microwave if you're not careful











