Wow, this plate has been a long time in the making! I told you that I got a couple of boxes of clear cullet (scrap) glass with my kiln. As with fabric scraps I am fascinated with the possibilities with scrap glass. Here's how I got this new piece made.
I started with my 6" tile mold and filled it with 15 ounces of glass bits and powder. I fused that to get a flat 6" tile to serve as the center for my plate.
The effect I was after was a flat center and a textured edge. I put the tile on the kiln shelf and placed large chunks all around it. My square mold is about 10" square and the piece of kiln paper under the glass is 10". I allowed room for the glass to expand.
Here's a close up view prior to firing.
Here's the result. When I fired the tile the powder must have some white glass in it so it didn't fire clear. That's OK, I like that effect. I also like the organic shape of the edge of the plate but it fired flatter than I wanted. I decided to go ahead and slump it. I put more chunks on top of the edges for the slumping in hopes of getting the bumpy texture that I wanted. (I intended to get a photo of that too but forgot.)
Here's the finished plate. Sweet! I really love this.
I got the bumpy edge that I wanted too. Now this isn't a success yet. There's a great probability that the glass is not all the same COE. How will I know? Over time cracks will develop. I'll just have to see how it turns out. Regardless, it was a great lesson and taught me even more about the kiln and which firing schedules are good for what types of effects.