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Kiln Shelf Review: What Kiln Shelves are Best for Soda Firing?

6/6/2019

 
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​​Types of Kiln Shelves:
  1. High Alumina Clay 
  2. Silicon Carbide
  3. Advancer or Thermal-lite
High alumina clay kiln shelves are my favorite for soda firing.
  • No kiln shelf drips on your ceramic pieces​​​​
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​Caution:
  • High clay alumina kiln shelves have a shorter life span than silicon carbide kiln shelves.
  • Order extras and retire kiln shelves early. (Hood College has successfully fired some of their kiln shelves 30ish times.)
  • Shelves that are a darker orange have been fired more times (See image on left).
  • Order 1 inch thick shelves. While heavier they last longer.
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Disadvantage of Silicon Carbide Kiln Shelves:
  • Silicon Carbide drips (They can drip down and crawl up a pot, see image on left.)
  • ​Cause: soda fluxes out the silicon carbide shelf.
  • Note: they vary in quality. nitrite bonded silicon carbide shelves are usually better.
Advancer Kiln Shelves:
  • Drip as well (granted I have not had first hand experience with them.)
  •  Are cost prohibitive. 
  • Can be disastrous when stored in wet areas.
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