A pattern is a replica of the desired part, used as tooling in many expendable mold processes. The pattern is used to form the shape of the cavity in the mold.
The maximum voltage an insulating material can withstand before breakdown occurs. Imperial units are in volts per Mil and Metric units are in kilovolts per mm.
The rate at which material is cut away from the workpiece during a machining operation, measured as a volume per unit time, typically cubic inches per minute.
The cost of reconditioning scrap material to the proper chemical composition before it is reused, measured as a percentage of the original material cost.
In bending, the neutral axis describes the location in the material that is neither stretched nor compressed, and therefore remains at a constant length.
The percentage of material used that yields finished parts. In one molding cycle, this describes the percentage of the shot that fills the part cavities.
Cylindrical parts with teeth around their perimeter which can mesh with other toothed parts to transmit motion. These include cogs, pinions, sprockets, etc.
A cylindrical protrusion on a part that is used for aligning or fastening another part by accepting a screw or other insert through a hole in the center.
