It is to measure the depth of sand.

It is to create a hole so that the pattern can be inserted into the cope.

It is to make a hole so that a core can be inserted into the mould.

It is to create a hole in the pattern of the cast.

It is embedded in sand and then withdrawn to create a hole so that molten metal can be poured into the mould.

To make metal objects with complex internal cavities

To reduce production time

To reduce machining steps

To reuse the mould for mass production

To make really large components

So that there is space for molten metal to expand.

So that a core can be inserted into the mould easily, in order to create a hollow feature within the component that is being cast.

So that the pattern can be removed easily without imposing too much friction which may drag some sand along, causing the intended shape to be affected.

So that the molten metal can solidify evenly where it comes into contact with sand within the mould.

So that the pattern will be symmetrical.

~900°C

~150°C

~1300°C

~500°C