Slumping large pieces in Paragon Pearl 56 - WarmGlass.com

Slumping large pieces in Paragon Pearl 56

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mary matchael
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Joined: Mon Nov 09, 2015 12:06 am

Slumping large pieces in Paragon Pearl 56

Postby mary matchael » Wed Nov 11, 2015 1:25 pm

I have cracked two large pieces slumping them over a stainless steel mold. My question is should I take the kiln shelf out when slumping to expose the elements in the bottom of the kiln?

Valerie Adams
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Re: Slumping large pieces in Paragon Pearl 56

Postby Valerie Adams » Wed Nov 11, 2015 2:15 pm

You'll want to post your full schedule in order to get the best help.

How far is your glass from the top element?
How tall is your stainless mold?

Bert Weiss
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Re: Slumping large pieces in Paragon Pearl 56

Postby Bert Weiss » Wed Nov 11, 2015 3:11 pm

Your glass is probably cracking due to thermal shock. Slow down.
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Morganica
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Re: Slumping large pieces in Paragon Pearl 56

Postby Morganica » Sun Nov 15, 2015 9:58 pm

As Val said, need schedule, and it wouldn't be a bad idea to either show a picture of the mold and the piece(s), or to at least describe the shape and the sizes/heights. Lots of possibilities here. Depending on the proximity of the glass to the elements as the glass starts to heat, there could be a number of problems.

If the glass is really close to the elements you might not be able to slow down sufficiently, so the solution could actually be the opposite of removing a shelf: You may actually need to "baffle" or insulate the glass from the elements to prevent that part of the glass that's closest to the elements from heating too quickly.

But there's no way to tell without more info...
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