Pot Drop Calculator

Enter any two of the three values, choose your glass, and calculate the third. Assumes a circular pot melt.

How to use this calculator

Size — the target is a circle; specify diameter or circumference.

Thickness — glass left to itself at full-fuse settles near 5 mm; thicker needs damming.

Weight — the most useful case is solving for the glass needed for a desired size.

Glass — soda-lime covers most art glass (Bullseye, Spectrum, Uroboros, float). If unsure, it's probably soda-lime.