|Gaffer® Casting Crystal Annealing Schedules. Semi-Open and Open Forms *
* Based on: Schedules for commercial annealing of ordinary ware. Corning Glassworks. Corning N.Y. 1950. For forms that are able
to cool reasonably equally on all sides.
** Obviously cooling rates of thinner pieces are faster than ordinary kilns would lose heat. In those cases the kiln can be allowed to
cool at its normal rate.
Revised schedules August 2010.