This guide gives an overview of the types of things that should be considered when planning an activity that uses metal based materials. 

Milling: The removal of material to provide a finished form of close tolerance and good surface finish. Milling may be used to form flat surfaces, grooves or recesses.

This guide gives an overview of the types of things that should be considered when planning an activity that uses plastics based materials. 

Used to remove small amounts of waste material and for cleaning up of welded joints. Normally an impregnated cutting or abrasive disc is used, rather than a conventional grinding wheel.