Problem Slumping

Val · Post by **Val** » Sun May 25, 2003 8:19 pm

I relatively new to warm glass work and I'm having a problem with slumping a clear and cathedral "96 spectrum" bowl. I have resulted in a frosting or haze in various degrees. After searching the archives I think I maybe slumping to fast.

Slumped as follows

Rate 370
Temp 1100
Hold 0

As fast as it will ramp to 1330
hold 15 minutes

anneal at 950
hold 30 minutes

Lisa Allen · Post by **Lisa Allen** » Sun May 25, 2003 9:36 pm

Val wrote:I relatively new to warm glass work and I'm having a problem with slumping a clear and cathedral "96 spectrum" bowl. I have resulted in a frosting or haze in various degrees. After searching the archives I think I maybe slumping to fast.

Slumped as follows

Rate 370
Temp 1100
Hold 0

As fast as it will ramp to 1330
hold 15 minutes

anneal at 950
hold 30 minutes

Try going lower and holding longer. The haze you are getting is probably devitrification and that mostly occurs between 1300 and 1400. You should be able to get it to slump at 1200 or 1250 by holding longer.

Lisa

Val · Post by **Val** » Sun May 25, 2003 10:03 pm

Thank You Lisa I'll give that a try

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Problem Slumping

Problem Slumping

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