slumping- avoid frosting on backside?

Bonnie Rubinstein · Post by **Bonnie Rubinstein** » Mon Aug 11, 2003 3:59 pm

Hi Wise-Ones,

I am fusing with system 96 and am using transparent colors- when I slumped into bowl mold, it got 'frosted' on the bottom side.. it was recommended on my next piece I raise the temp (from 1450 to 1470), but that resulted in big bubbles... don't wish to loose more pieces.. any thoughts? If I lower the temp, will that work?

Thanks kindly...
Bonnie

Amy Schleif-Mohr · Post by **Amy Schleif-Mohr** » Mon Aug 11, 2003 5:18 pm

You don't indicate that you are slumping at 1450 or not. If you are that is WAY to hot. Slumping temps are normally between 1100 and 1200.

Amy

Val · Post by **Val** » Mon Aug 11, 2003 6:20 pm

I was having the same problem through experimenting I found although I couldn't eliminate all frosting I reduced it to the upper inch and a half.

results of experiment using spectrum clear - reduce temp. to 1250 or as low as your kiln allows to slump and reduce time to as little as possible.

I reduced time on a 11 3/4" bowl to 5 minutes and still got frostinfg on upper edge, but I like the look so I'm happy.

That is until I want it completely clear.

Val

Bonnie Rubinstein · Post by **Bonnie Rubinstein** » Mon Aug 11, 2003 7:37 pm

Amy,

woops- too many #s in my head today-( plus my 6 year old's pool party is going on!) ..I meant to say that I slumped at 1270 instead of 1250.. I will try lower, thanks... and thanks, Val.

Bonnie

Tony Smith · Post by **Tony Smith** » Mon Aug 11, 2003 7:53 pm

Bonnie,

I found I was still getting too much texture for my liking at 1250Â°, so now I slump at 1150Â° for 20 minutes.

Tony