Troubleshooting - WarmGlass.com

Troubleshooting

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dianes
Posts: 5
Joined: Fri Aug 26, 2005 2:53 pm
Location: Fort Collins, CO

Troubleshooting

Postby dianes » Wed Sep 27, 2017 1:49 pm

Hi, we lived abroad for 7 years and I am just now returning to glasswork. My equipment and supplies were in a storage facility without heat or a/c. I fired my first pieces and they all migrated to the middle of the kiln shelf and fused together. I used the Basic 6 schedule from this site BASIC 6-Segment Firing Schedules.
http://system96.com/Resources/FiringGuideFahrenheit.pdf with System 96 glass. I suspect the temp was too high but fear there might be other contributing factors.

I used Thinfire shelf paper that no longer looks white from being in storage so long. It looks beige. Does shelf paper deteriorate?

I used to fire my kilns in my kitchen but have room in the garage in our new house. It was colder (low of 40 F0 and rainy when I fired. Does the garage need to be heated?

Thanks in advance for your kind assistance.

Diane
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DonMcClennen
Posts: 336
Joined: Sun Mar 09, 2003 9:09 pm
Location: Ontario

Re: Troubleshooting

Postby DonMcClennen » Wed Sep 27, 2017 3:18 pm

It should not make any difference what's going on outside (rain, cold etc.) It's what's going on inside the kiln that counts! If all pieces migrated toward centre then I suggest you have some kind of vibration going on. Put just a few pieces back in and run a monitored test firing.. try to figure out what is causing garage floor/kiln vibration. Check to make sure your kiln shelf is level. Storing a kiln should not cause any problems... yours looks to be in good shape!
"The Glassman"

Marty
Posts: 822
Joined: Mon Mar 10, 2003 3:58 pm
Location: Maine
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Re: Troubleshooting

Postby Marty » Wed Sep 27, 2017 3:54 pm

Thinfire shrinkage is my guess.

(oops, Jim Hobbyist got it first)

dianes
Posts: 5
Joined: Fri Aug 26, 2005 2:53 pm
Location: Fort Collins, CO

Re: Troubleshooting

Postby dianes » Wed Sep 27, 2017 6:58 pm

Thank you both for your input. I will try another fire with scrappy pieces and keep you posted.


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