Preparing the kiln to drape slump an organic pendant lamp shade
Pendant lamp shades can be tricky to get the balance right. The weight needs to be equal all around to avoid it slipping to one slide as it fires. In addition, if you fire too hot or to too long, you can end up with glass pooled on the floor of the kiln or irretrievably stuck to the mould.
The rule of thumb is low (temperature) and long (firing time). Some kilns have a peekaboo window that allows you to watch during the critical moments when the glass is dropping and adjust if needed. I only wish I had such luxuries!!