Casting glass is another technique Mike likes to use; he sees it as a way for him to bring color to his sculpture. And some of the same techniques Mike uses today have been used since early in the Egyptian period.
Modern cast glass is formed by a variety of processes such as kiln casting, which is the process used in Leckie’s studio, or casting into sand, graphite or metal moulds. In kiln casting, Mike makes his mold and then places it into the kiln, adds frit (small glass pieces, in colors and patterns) and brings the temperature up, melting the glass together. With this method you can add layers if glass (and color) with each firing.
When Mike gets the desired colors and thickness in the piece, it must be annealed – the long and complicated process to bring the temperature down slowly so the new piece doesn’t crack in the cooling.