slump 17x11 piece 5/16” thick over ceramic wave mold. - WarmGlass.com

slump 17x11 piece 5/16” thick over ceramic wave mold.

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Carol Ann
Posts: 23
Joined: Tue Nov 18, 2003 11:52 am

slump 17x11 piece 5/16” thick over ceramic wave mold.

Postby Carol Ann » Sun Dec 26, 2021 10:47 pm

I am using a Bullseye double curved ceramic mold size 17x11. The glass is 5/16” thick. I think the annel should be for 2 or 3 hours T 900 degrees F.
1. 50f to 300f .hold 15 minutes
2. 100f to 800f hold no hold
3. 150 f to 1000F hold 5 minutes
4. 100 F to 1215F hold 10-15 minutes visually check
5. 600f to 900f hold for 2 or 3 hrs?
6. 200f to 800f. hold 01. minute
7. 100F to 500f hold 01. minute
8. 250f to 80f hold 00
I have never tried to slump a piece this thick. Does the schedule seem close.?
I think I will need to visually check the slump
Thanks for any assistance.
Carol Ann
Carol Ann

DonMcClennen
Posts: 380
Joined: Sun Mar 09, 2003 9:09 pm
Location: Ontario

Re: slump 17x11 piece 5/16” thick over ceramic wave mold.

Postby DonMcClennen » Wed Dec 29, 2021 10:40 am

this mold slumps very easy.. 1 hr. hold should be suffice. Your multiple ramps probably not needed.. why not 250 to 1250, hold, then AFAP to1000, then 80 to anneal, then 80 to 750 then off?
Works for me.
"The Glassman"

Carol Ann
Posts: 23
Joined: Tue Nov 18, 2003 11:52 am

Re: slump 17x11 piece 5/16” thick over ceramic wave mold.

Postby Carol Ann » Wed Dec 29, 2021 12:53 pm

Don, thank you for your help.
Carol Ann
Carol Ann


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