|Monthly Tech-Tip |
This is Plainsman Polar Ice porcelain. It is plastic enough to be pulled very thin on a plaster table. I have cut it in a 2in by 2in grid. This porcelain is ideal for these testers because it has such a glassy surface, this produces minimum surface tension to resist the flow of the glaze.
Glaze Melt Fluidity - Ball Test
A test where a 10-gram ball of dried glaze is fired on a porcelain tile to study its melt flow, surface character, bubble retention and surface tension.