Birds #2 – #7

These birds were all cast out of identical PoYo mold in wax, and then bent into modified positions after being warmed slightly.

The wax originals were attached to clay reservoirs, and the 40% plaster, 60% silica molds poured and steamed on December 3rd, and fired on December 4th, in Kiln 1 on the following schedule:

1. 1:00 – 100
2. 2:00 @ 100
3. 7:00 – 515
4. 9:00 – 600
5. 9:01 – 865
6. 14:00 @ 865
7: 14:01 – 515
8. 29:00 @ 515
9. 49:00 – 400
10. 69:00 – 35

They came out of the kiln on Monday December 8th.

Going around the circle in the above picture from the first red one on the top left:

Together #2, the wax weight was 45g, which was 187g of furnace pellets by water displacement. In the mold, I used 285g of mystery red cullet.

Together #1, the wax weight was 45g, which was 148g of furnace pellets by water displacement. In the mold, I used 25g of gold ruby frit and 245g of clear furnace pellets.

Heads Down #1, the wax weight was 52g, which was 152g of furnace pellets by water displacement. In the mold, I used 16g of ivory white powder, and 236g furnace pellets.

Heads Down #2, the wax weight was 50g, which was 149g of furnace pellets by water displacement. In the mold, I used 30g of ivory white powder, and 231g clear powder.

Heads Down #4, the wax weight was 52g, which was 161g of furnace pellets by water displacement. In the mold, I used 22g of opal white powder, and 242g furnace pellets.

Heads Down #3, the wax weight was 50g, which was 197g of System 96 furnace pellets by water displacement. In the mold, I used 16g of opal white powder, and 236g furnace pellets.

The album below has pictures of the process:

Birds #2 – #7

Since both the ivory white birds turned brown, and there were brown spots in the last firing I did in ivory white, it seems that ivory white turns brown when kiln cast. The extent to which it changes seems to be influenced by the firing schedule, since the ones in the shorter firing were much more brown than the ones in the longer firing.

The powder melts de-vitrify and look very stone-like, which is an effect that I like.

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