lumps or bumps in system 96
- This topic has 4 replies, 3 voices, and was last updated 12 years, 1 month ago by Anonymous.
- February 26, 2009 at 7:30 pm #9317precevParticipant
I have been using system 96 and the glass comes out looking kind of like there are little bumps on the surface. Does anyone else have this problem, and what can I do? Thanks, pamFebruary 27, 2009 at 3:25 am #11163VernelleParticipant
We need a little more information. What is your firing schedule, how high are you taking it? Sounds like air bubbles to me.
VernelleFebruary 27, 2009 at 4:00 am #11164AnonymousInactive
I agree with Vernelle – it sounds like small bubbles trapped between layers of glass.
You would think that the super smooth machine rolled surface on System 96 glass would eliminate bubbles but I think it actually can make it more difficult for the inevitable air between layers to escape. When I use Bullseye Tekta – which is machine rolled and has one textured side and one smooth side I make a point to never fuse smooth-to-smooth for this reason.
Did you have a bubble squeeze in your schedule?
Helios Kiln Glass Studio
PaulTarlow.comFebruary 27, 2009 at 2:07 pm #11165precevParticipant
I’m starting out at 250 per hr to 500, then 500per hr to 1250, hold for 20 minutes, then full up to 1450 to fuse, then anneal, should I hold on the way down somewhere also and for how long. Thanks, PamFebruary 27, 2009 at 7:49 pm #11166
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