Search found 8 matches

by Lee Sorg
Fri Mar 09, 2018 12:47 pm
Forum: Techniques and Tools
Topic: Vitrigraph bubbles and craters
Replies: 6
Views: 7539

Re: Vitrigraph bubbles and craters

Thanks Peter and Brad. Sounds like additional time in the vitrigraph bubble soak stage should solve the problem.
by Lee Sorg
Thu Mar 08, 2018 10:40 am
Forum: Techniques and Tools
Topic: Vitrigraph bubbles and craters
Replies: 6
Views: 7539

Re: Vitrigraph bubbles and craters

I'm certain there is air in the stringer. I guess was hoping that a longer adjusted bubble soak in the full fuse might move the air out completely, but it sounds like that's not the solution. To create the vitrigraph, I use the Olympic HOTSIE P6. I set the dial to 4 until it reaches 500 degrees. The...
by Lee Sorg
Thu Mar 08, 2018 8:54 am
Forum: Techniques and Tools
Topic: Vitrigraph bubbles and craters
Replies: 6
Views: 7539

Re: Vitrigraph bubbles and craters

Hi Brad, thanks for your help on this. I've added three photos. Photo A (green), done about a year ago, shows what happens on my initial full fuse firing of vitrigraph to a sheet of glass. This kept occurring, so I stopped at that time trying to make vitrigraph work. But, I like what’s possible with...
by Lee Sorg
Wed Mar 07, 2018 3:07 pm
Forum: Techniques and Tools
Topic: Vitrigraph bubbles and craters
Replies: 6
Views: 7539

Vitrigraph bubbles and craters

I'm having bubble and crater issues with vitrigraph. I am using vitrigraph to create abstract designs, and in the initial full fuse of the vitrigraph to the glass sheet I am ending up with small bubble/craters in some places - usually at a place where the vitrigraph stringer is fatter than the strin...
by Lee Sorg
Mon Feb 23, 2015 8:02 pm
Forum: Techniques and Tools
Topic: Best COE red glass for high fire melts
Replies: 8
Views: 11550

Re: Best COE red glass for high fire melts

Thanks Cynthia, I'll give the Burnt Scarlet Striker a try.
btw: Very cool piece!
by Lee Sorg
Sat Feb 21, 2015 1:44 pm
Forum: Techniques and Tools
Topic: Best COE red glass for high fire melts
Replies: 8
Views: 11550

Re: Best COE red glass for high fire melts

Thanks for the suggestion Jim. I'm not sure how to oxidize the atmosphere in a kiln. But it sounds like this would not be a safe approach anyway. I did go ahead and order the 0024 Tomato Red — it looks like using this glass will work. After my first attempt using transparent red did not work out so ...
by Lee Sorg
Fri Feb 20, 2015 6:50 pm
Forum: Techniques and Tools
Topic: Best COE red glass for high fire melts
Replies: 8
Views: 11550

Re: Best COE red glass for high fire melts

Great. Thanks Brad.
by Lee Sorg
Fri Feb 20, 2015 4:20 pm
Forum: Techniques and Tools
Topic: Best COE red glass for high fire melts
Replies: 8
Views: 11550

Best COE red glass for high fire melts

I'm new to the Warm Glass forum, so first, thanks for including me. I am doing high fire temparature melts and discovering that transparent red does not stay red once it reaches high temps of 1700 degrees. The red turns a muddy liver brown, kinda yucky looking. So my question is, what, if any, COE90...