The edge of a part where the mold separates.

A standard computer file format for exchanging CAD data, typically from AutoCAD programs. ACIS is an acronym that originally stood for “Andy, Charles and Ian's System.”

Sometimes called the “cavity,” it is the half of the mold that usually creates the exterior of a cosmetic part. The A-side usually does not have moving parts built into it.

This is a hole that is parallel to the axis of revolution of a turned part, but does not need to be concentric to it.

Using abrasives in a pressurized air blast to create a surface texture on the part.

Also known as a “chamfer,” it is a flat truncated corner.

A cosmetic imperfection that is created where the resin is injected into the part, usually visible as a blotchy discoloration on the finished part at the site of the gate.

A raised stud feature that is used to engage fasteners or support features of other parts passing through them.

A temporary or interim mold made for the purpose of making production parts until a high-volume production mold is ready.

Sometimes called the “core,” it is the half of the mold where ejectors, side-action cams and other complex components are located. On a cosmetic part, the B-side usually creates the inside of the part [..]