So, since the first firing of the scissors didn't work out so well, here's a second attempt.
This time, the molds were poured, one-part 60% silica, 40% plaster, and were steamed by wrapping them in a plastic bag in order to raise the internal temperature of the whole mold. This process removed all the wax easily. The molds had built-in reservoirs.
The same firing schedule was used:
1. 3:00 - 100
2. 10:00 @ 100
3. 16:00 - 650
4. 19:00 @ 650
5. 19:01 - 875
6. 26:00 @ 875
7: 26:01 - 515
8. 31:00 @ 515
9. 41:00 - 390
10. 52:00 - 20
The kiln was fired on February 17th, and came out on February 20th.
The glass didn't flow through the molds completely, always stopping short of the scissor handle.
All the pictures associated with this firing can be found in the following album:
Labels: Kilncasting
