Search found 4 matches

by brerearl
Fri Jun 13, 2003 9:06 pm
Forum: Techniques and Tools
Topic: slump bubble
Replies: 8
Views: 8261

solution

Thanks to all for the valuable suggestions. Here is what I did. I cut two 1/8" strips of thinfire. I put the plate back in the mold with the thinfire strips creating a small airway from the rim into the lump. I then refired the bowl at: RA1 350 F1 1000 HD 0 RA2 1000 F2 1250 HD 10 minutes RA3 Fu...
by brerearl
Thu Jun 12, 2003 8:23 am
Forum: Techniques and Tools
Topic: slump bubble
Replies: 8
Views: 8261

remedy

Do you think the "lump" would go away if I re-slumped the piece at a very slow rate? perhaps at a slightly lower temp as well, to alow the lump to relax without having the rest of the bowl puddle?
by brerearl
Wed Jun 11, 2003 9:42 pm
Forum: Techniques and Tools
Topic: slump bubble
Replies: 8
Views: 8261

details

It was a standard Bullyseye mold with clear vent holes. The firinG schedule was: RA1 500 F1 750 HD 0 RA2 1000 F2 1275 HD 10 MINUTES RA3 FULL (AFAP) F13 960 HD 30 MINUTES RA4 150 F4 750 HD 0 RA5 IDLE TO ROOMTEMP The bubble was halfway up one side of the plate, I am not certain but I think it was towa...
by brerearl
Wed Jun 11, 2003 9:28 pm
Forum: Techniques and Tools
Topic: slump bubble
Replies: 8
Views: 8261

slump bubble

I slumped a double thickness of Bullseye glass, 14.5" diameter into a shallow dish mold. During the slump a bubble the size of an egg formed halfway up one side. I welcome any comments as to why the bubble formed and how I can get remedy the problem.