Must be able to read masters. Must know the difference between sands. Has to be able to read measuring devices. Must make proper sand required. Must know proper wires and vents on all jobs. Must make good cores. Must be able to operate sand mixers. Must be able to know proper chills and risers. Must know the difference between washes. Must be able to assemble cores of various sizes & complexities. Including filing to fit and pasting or clamping s...
