Glossary

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H

Handles

Interfaces that are attached to another part and designed to be grasped by the user’s hand. (Includes: arms, cranks, grips, knobs, latches, levers, etc)

Hot tearing

A part defect, sometimes called hot cracking, which describes cracks that result from shrinkage. If a part is not allowed to shrink freely and encounters an obstruction, the solidified material will crack.

Hourly rate

The burdened hourly cost of manufacturing parts, manufacturing the tooling, or performing a secondary operation. This rate may include direct and indirect labor costs, overhead costs, as well as profit.

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