Float Glass Experiments

I have been conducting some recent experiments with float glass strips.  The intention was to play with devitrification.  

I placed the strips randomly tin or air side down.  In the first they were shingled, and then fused. In the second, they were shaped first then fused.  The first went into a self-made ceramic mould.  

Assembled strips fused and formed

Strips bent and assembled before fusing and forming

The second I decided to make into a large tray.  The mould for this, as I had no suitable mould of the correct size, became cut kiln shelves arranged in a parallogram and covered with thinfire.  

"Free form" mould assembled on sand bed

I fired at 100C per hour and watched periodically from 600C top 720C.  I decided to stop the firing after 10 minutes at 720C.  This was not an entirely successful experiment, as only a little devitrification shows on the first and none on the second tray.  Still, I obtained two interesting vessels, which encourages me to continue the experimentation.