SUNCATCHERS

They are great and maybe I can make a few which will be beautiful in glass.  I have begun with two round disks of clear 3mm glass.  That is a real advance since prior to this I found it so difficult to cut circles.  But success and on the top of one I but brown and green pieces of glass to emulate the look of a tree.  Forgot to take a before picture but popped it in the kiln and fired it with the following schedule:

300 dph......................................1150 degrees..................................hold 30 mins
600 dph......................................1430 degrees..................................hold 12 mins
Full...............................................900 degrees..................................hold 1 hour
100 dph........................................ 700 degrees..................................hold 2 mins
Off.


Results to come:  Out of the kiln and I immediately see a small hairline crack in the glass.  After a little research I found the following:

• Small, interconnected cracks (like a spider web).

These cracks generally extend from a single spot on the underside of the glass. They aren't usually severe enough to cause the item to split into pieces. Sometimes shelf primer will also be stuck to the underside of the glass. Most likely, this kind of crack is caused by glass sticking to the kiln shelf. A close examination of the shelf may even reveal small pieces of glass that are stuck to the shelf. The obvious solution is to scrap the shelf clean and apply fresh kiln wash.

This makes sense and appears to be the problem.  I did notice a small tiny, piece of glass on shelf which I did not think much of, no more of that from now on.  I will be using thinline paper until I put fresh kiln wash on shelf.