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Moulding refers to the manufacture of casting moulds, and especially sand moulds. These are roughly divided into machine moulds and manual moulds.

A monorail is a suspended conveyor device for handling and transport of materials by means of a crane or shackle/cable system.

Model plates hold the model halves for the production of the casting mould. The model plates are fixed to the mould machine table.

A model is the moulding equipment for the direct forming of the cavity of the casting mould for the production of an accurately dimensioned casting.

MIG welding is the abbreviation for Metal-Inert gas Welding. This is a method of arc welding using an additional wire in an atmosphere of inert gas such as argon or helium.

Melt is the fluid state of a material. Metals are generally converted to the fluid state in a furnace. Mercury is the only metal to exist in a fluid state at room temperature.

The Inmould process is a process developed by the International Meehanite Metal Co. Ltd., Reigate (England). The magnesium treatment of cast iron melts forming the nodular graphite is carried out not before the casting in a ladle, but directly in the casting mould. The process uses a granular powder, which in addition to magnesium also contains calcium and silicon, and therefore acts as an injection agent in the sense of mould injection.

Meehanite cast iron is a proprietary trademark of the Meehanite Metal Corporation for a cast iron material that has been extensively developed with regard to melting, casting, moulding and heat treatment. This is based on a patent originally awarded to A. F. Meehan in the USA in 1922, which essentially covered a special injection process on a CaSi basis to create very fine graphite in the structure.

Mechanisation is the use of mechanical aids and systems instead of manual working methods.

Magnetic separators are used for sorting and separating magnetic materials out from other materials. These devices are sometimes also constructed as belt separators.