Hi Guys
Broke the vice while holding the steady casting. I desperately needed to keep the saw functional so used one of a pair of angle plates as a temporary repair. The other angle plate I filled with candle wax, and added two pieces of hardboard one to each face, for the machining allowance. This was used as a pattern, and was moulded in the normal position with one flat face horizontal. When splitting the flask the sand collapsed, and on inspection realized there was not enough taper when moulded in that position. I changed pattern position to a ' V ' the mould tuned out well. Poured the aluminium and behold another successful casting.
Metal casting is like a drug.
David