Our ceramic shell molding technique involves dipping the entire cluster of wax parts into a ceramic slurry, strategically draining excess slurry, then coating it with fine ceramic sand. After drying, this process is repeated again and again, using progressively coarser grades of ceramic material until a self-supporting shell has been formed. The completed ceramic shell may be from 1/4” to 5/16” thick. (approximately 6 m.m. to 8 m.m.).
The coated cluster is then placed in a high temperature furnace or high pressure steam autoclave where the pattern melts and runs out through the gates, runners and pouring cup. This leaves a hollow ceramic ready to be cast after it goes through a final preheat and curing process.