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Cloisonné Jewelry by Merry-Lee Rae



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Merry-Lee Rae  
Rae Studios  
P. O. Box 1812  
Freedom, CA 95019  

merrylee@merryleerae.com  




Technical Help
Ask away! I may be the only one that ever checks in here so you might email me to let me know you posted something so I won't miss it! If you would like information directly from me regarding technique, supplies instruction etc. please post the question here so that others may benefit from our correspondence and perhaps add their advice for you as well.   Thank you!

Subject Clouding, causes and solution

Date Sat Oct 2 2004 12:37
Author Fred Koschetzki (jwlus@msn.com)
Enameling is the fusing of glass to metal.
A transparent shiny glass contains no crystals, however if a glass is cooled slowly crystals begin to form and the resulting glass is clouded with crystals. This is referred to as devitrification. Clouding can be avoided by cooling the firing as quickly as possible after it reaches the mature temperature.
Glass formulas vary greatly and crystals of different silicates grow at different temperatures during cooling. Crystallization can occur down to the freezing point of glass (the solid state).
To make crystal clear glass I crack open the kiln door right after I reach temperature and shut off the kiln. A rapid descent to approximately 1292 F ensues. At this temperature I close the door and avoid thermal shock. Some experimenting with various cooling rates and door closing temperatures should solve the clouding problem.

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alt.titleHome  |  alt.titleClass Information  |  alt.titleContact Me  |  alt.titleGalleries  |  alt.titleMy Artist Friends  |  alt.titleMy Most Important Work  |  alt.titleThe Cat Collection  |  alt.titleThe Mermaid Collection  |  alt.titleThe Garden Collection  |  alt.titleMy Newest Work  |  alt.titleThe Ocean Creatures  |  alt.titleThe Fish Collection  |  alt.titleIt's a Great Life! Earrings  |  alt.titleEnamelist's Discussion  |  alt.titleWholesale Info

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