In a squeeze machine, there is a squeezer head or a plate which is used as a pressing board to force the sand inside or compress it.
This machine is mostly used for shallow patterns.
These machines are classified as, squeeze machine, sand slinger, jolt-squeeze machine and sand slinger.

The diaphragm moulding machine is used to Give uniform sand hardness throughout the mould.

The property of sand due to which it evolves a great amount of steam and other gases is called Permeability.

The property of sand due to which the sand grains stick together is called Cohesiveness.