Possibly, though ceramic usually shrinks when fired.
At this point I'm just intrigued with the possibility of firing ceramics in a microwave in minutes instead of hours.
It looks like, just using a cheap 1000 watt microwave and $30 microwave kiln small parts can be fired in five to fifteen minutes.
Probably about 7 minutes would be ideal for most parts. More like 12 minutes for really extra hard stoneware.
What seems crucial it preheating to get the clay perfectly dry. If absolutely dry there really doesn't seem to be any problem with ballooning or explosions. As far as I can tell, the results of firing five to ten minutes in the microwave kiln produces results equivalent to several hours or days using conventional firing methods.
I made this kind of ornament to try in the microwave kiln by pressing a leaf into some clay with a rolling pin.
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- Resize_20231023_035405_5723.jpg (136.1 KiB) Viewed 5549 times
If this thin flat ornament turns out OK, I may use the same method to finally make a displacer for the Brent Van Arsdell Limited Edition restoration I've had on the shelf for quite a while.
https://www.stirlingengineforum.com/vie ... f=1&t=5401
Even that would be too large for the little microwave kiln.