Furnace lid

To help prevent heat loss, I cut a round plate with a hole in the centre big enough to see the crucible. I found 2 pieces of pipe and on just fits inside the other. I chose to do a swivel method.

NOTE! Make sure the swivel is at least opposite of the blast entrance.

I welded the larger pipe to the furnace itself and a small section of the larger pipe to the lid. Next I welded the smaller pipe inside of the larger pipe attached to the lid. the small pipe slides into the larger pipe on the furnace.

I welded a section of rebar the length of a handgrip to the lid so you can grab it to swivel.
It may get hot though.

(The crucible is still our old version and wasnt functional yet)