Gas Release One-Step Core Pins

Deep stepped features are particularly prone to gas trapping. The diameter transition creates a pocket where air accumulates past the step shoulder — and in blind cavities, this air has nowhere to go.

Gas release one-step pins incorporate venting geometry (flat-sided or SVC channels) into the shaft of a stepped pin. This eliminates trapped-air defects without requiring separate vent inserts or parting line modifications.

Flat-sided venting is usually sufficient for stepped cavities since the step transition itself provides some gas channeling. SVC is recommended for exceptionally deep cavities where the flat-sided capacity is insufficient.