Last techno-(glaze) I posted about silica, the base for all ceramics. It is now time to explore the faithful sidekick: Alumina! If Silica was Batman, Alumina would be Robin. If Silica was Captain Planet, Alumina would be the Planeteers. If Silica was Butch Cassidy, Alumina would be The Sundance Kid. Silica and Alumina are the foundations any ceramic practice.
Techno-(glaze): Info on ceramics-glaze, technique, history.