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Kiln washing

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Kiln washing

Postby Klikth » Thu Jun 28, 2018 9:23 am

Hi there, I’m new to Glass fusing and wondered if you could answer a simple kiln shelf question.
If I’ve just rewashed my kiln shelf, after it’s dry, do I need to refire it at 500 degrees on its own in the kiln before I start firing my glass projects again.
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Re: Kiln washing

Postby marykaynitchie » Thu Jun 28, 2018 1:30 pm

If you are new to kilnforming, I strongly encourage you to subscribe to Bullseye's instructional videos. You get access to about 100 videos for $45 per year, and if it saves even one project, you will have saved that value and more. https://videos.bullseyeglass.com/videos ... trailer-2/

Here is a link to our video on preparing kiln shelves https://videos.bullseyeglass.com/videos ... n-shelves/

This particular video is free, so enjoy!

You do want to dry your kiln shelves in a warm place (like a kiln) to drive out any humidity that could provoke bubble trapping during the glass firing. This might not be necessary if you are in a very warm, dry climate.

Mary Kay
Mary Kay Nitchie
Bullseye Glass Co.

Subscribe to Bullseye kiln-glass videos at
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Re: Kiln washing

Postby jestersbaubles » Sat Aug 18, 2018 6:51 pm

No, you don't need to pre-fire kiln wash.

You don't even need to dry it. People will tell you that firing on a wet shelf will cause bubbles. The water from kiln wash will evaporate WAY before the glass becomes fluid enough to start forming bubbles.

Good luck with your projects!
Dana W.
Dana Worley Fused Glass Designs
dba Jester's Baubles
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Location: Logan, UT

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