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Interesting. No, I dont user fiber paper. I didn't want to deal with the handling of it after firing. Just plain purple shelf primer. But YES, I am flipping the piece over for the slumping run. I have dealt with devit before with chunks of glass that I bring home from glassblowing (everything that h...

the milkiness/matte-finish is on the inside. and I am slumping at 1200... just BARELY enough temp to get it to slump!

I do lots of blown lamps. I blow the base and the top and do a 3-way switch so that the base can light up too... I assume that you are drilling a hole in the bowl (1/4") to get the harp to stick through?? If you are 1 sheet of glass, you are not going to be too thick or heavy. You can stick it ...

Are you using clear iridized? Did you use any kind of overglaze? Did you clean the glass well? Is milkiness on inside or outside? No iridized No overglaze (the stuff I use doesnt work until 1400 and causes milkiness below 1400 :-) ) Yes, I clean the glass. I don't think it is the glass cleaner, bec...

Excellent! Thanks!

I would love it if someone would help me out here. Bulleye glass, coe90, 2, 3, or more layers thick. first run (melt): glass is perfectly clear second run (slump), glass on the edge of the bowl (where it stretches) gets a slight milkiness. Barlett controller: 200deg/hr to 900 150deg/hr to 1200, hold...

I have one of the "Crucible" Kilns from Seattle Pottery. Since I believe that they are all "Crucible", I'd better describe it. It is an octagon, roughly 30" kiln with 3 "stacks" and a Barlett controller. I have used it for hundreds of runs, slumping glass and it ha...