No, no, this isn't it. Those photos are later in this post.
The cement was taking way too long to dry, which is my fault for leaving it in a cold, damp garage for an entire night. Still, it was still wet on the bottom after three days, so I stuck a hair drier in to help it along. It seemed to work.
With that all done, I was able to install the gas burner and test it out. Unfortunately, there wasn't enough gas left in the tank to do what I had hoped, which was to coat the crucible with flux (a 50/50 mixture of boric acid and borax).
By the time it got up to 500 degrees (far from hot enough for what I was doing), I noticed the pressure on the regulator starting to drop - a telltale sign that I was quickly running out of gas.
The flux mixture was only just starting to melt when I decided to shut off the gas. I can't say when I'll get more gas, but I got my supply of wax rods today, so I'll probably make a part tree tomorrow and start working on a mould.
I suspect that I have enough footage to justify one complete video with just the setup, and casting some test pieces will make for a second.