I guess they haven’t heard of the build it yourself HAHSA.
I used to have a book on how to build your own wood stove, everything from 55 gal steel barrels, outboard motor gas tanks, welded sheet steel, I’ve even made them from 1/4 inch steel plate, door latch hinges and all can be welded in a home shop.
So how can the EPA stop the building of a wood stove!