Draping and slumping are two techniques for turning a two dimensional sheet of glass into a three dimensional object using a mould.
Another technique allows gravity to dictate the finished shape.
This is called : Drop-out.
I can then turn one of these:
Here’s the set-up in the kiln. In order to work out where the glass stretched, I had drawn a grid on the glass using glass paint.
And here’s the end result. Note that the centre of the piece hasn’t deformed much: the grid here is unstretched.
In between was a nerve-wracking 40 minutes where I had to keep looking through the kiln vent to check how much the glass had dropped through the ring.
Next to try colours.