Before going on working with the fresh cast iron, which comes right off the casting box, it first has to be well cleaned.
Therefor we use sandblasts, water jet machines, fuel cutting tools, cleaning drums and jogging devices.
Excess goods and remains from the act of casting have to be removed.
Like downsprue, feeder/sink heads, runs, joints, casting cores and possible sticking shaped material. - e.g. foundry sand.