“I want to tack fuse [6mm thick crescents to] stand erect...[on] a base. I need help thinking this through. … Is there a way to fuse them erect without forming a puddle of glass?”
It is correct that at tack fuse the crescents will deform. It is, after all, above the slump temperature.
You could use fibre blanket packed between the crescents arranged in a fan formation. This requires assembly on the kiln shelf. If you allow them to touch at the pivot point, they will stick to one another during the firing.
Use a sinter firing. It will be something like:
65°C/ 117°F to 670°C/ 1236°F for 6 hours.
The anneal soak should be for 5 hours at the appropriate temperature. The associated cool is at 11°C/ 20°F to 427°C/ 800°F, 0’;
20°C/ 36°F to 427°C/ 700°F, 0’;
finally at 52°C/ 117°F to room temperature.
This arrangement and firing will enable the crescents to be securely attached to the 6mm base with a minimum of distortion.
More information is available in my e-book Low Temperature Kilnforming, available from:
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