Great stuff! I really like your melting setup. Is that all home made? What is it you were casting? It looks sort of like a lap wheel to me.
Dollar Mountain Forge & Ruana Knives use that process for casting handles on knives, but I'm not sure how it is done without messing up the heat treat.
I've done this myself but I just use a 40 gal oil drum, spent small lp tank with the top cut off and a bunch of wood. Bring it to red hot and add pop cans. For the casting I use foam and sand method. I find it a lot of fun and suggest all to try it.
The crucible looks like a piece of steel tube. Thinking of melting down some copper or brass scraps and was looking for something to use as a crucible. Figure if the steel tube was coated with whiteout then nothing should stick to it. Does this make sense or should I stick with buying flat bar?