When we left off this casting project, I was about to cut the excess wax off my mold-in-progress.
A heated exacto knife will do. But speaking of heating, you really want to use an alcohol lamp, not a candle: burns clean, no soot. So I got that done, and tried to be careful about keeping the toes connected for a good cast (but not so connected that I’d have to cut off a lot of unwanted material.)
So here we’ve got that done, and the mold is set at an angle on two thick sprues attached to the detachable bottom of the casting flask (or as I like to call it, the soup can.)
After that, Bob put the can together, mixed up some investment and poured it in. I’d show pictures of us actually casting a week later, but I had my hands in giant heat-resistant gloves at the time, taking the can out of the furnace with a looong set of tongs and setting it in the machine just as the brass was nice and liquid. Close the lid and BAM! Centrifugal casting accomplished.
One thing I learned about brass is, it doesn’t behave like silver (well, duh.) With a silver cast, you could take the can out of the machine as soon as it’s done spinning, plunge it in cool water, and fish your casting out. Brass isn’t so instant like that; you have to let it sit maybe 10 minutes–and if you look at the button (which used to be the plug of wax just under the sprues) it’s a very wild shade of hot hot orange.
And so, with just a bit of cleaning:
So adorable! But now what? It’s pretty much up to my husband what he wants the toes to be mounted on. He’s interested in a silver medallion type of thing that he could frame and hang up. I’d like it to be . . . I don’t know, something that’s not just plain silver sheet. I’ll have to look around, and think about it, so Part 3 is probably not going to happen for a long while.
Meanwhile, I’ve got just one class left for the summer session, and it involves a big project I’d hoped to have finished already, but there was a touch of difficulty. More on that next week, I’m sure.