You could do that Andy, with some sort of cutter, but far easier to make the patterns instead since you then too only have to machine them once - you can then pull as many castings off them as you like. If you were to machine the sand, you would have to do it every time for a new same casting. 3d profiling can take hours.Hey Brian
I had a thought yesterday, is it possible to use your new bonded sand as a solid block, and your CNC to machine out the shape of the things you want to cast, presumably with a vacuum nozzle sucking up the debris instead of a water feed lubing it?
I just thought for your future cylinder head project, you could get the thing designed in CAD, and transfer it straight to the CNC to machine out the molds and cores and go straight to casting?
Im guessing Ill need more than one, good to have spare raw castings should some be non usable, or if I screw up machining one
Good idea all the same,