discourse consist of resin soaked quartz and which after setting has become rock-hard ten of these cores and sequence comprised the mold of a series 8000 crankcase prior to casting each template is given a coating which has a horrific smell to it the coating prevents the sand from mixing with the steel during casting the molten steel flows into the mold via this channel it passes through the filter chamber with its ceramic filter and enters the mold cavity via this feed channel and then spreads throughout the entire mold but