DME University

Vent Placement Solutions

Vent Placement Solutions

Most mold designers/builders say to liberally vent the mold as a general rule, including the runner system if needed. Best places to vent are opposite the vent, around the parting line, weld line locations, or the last cavity location to fill. Other required locations may be deep ribs, corners, and thick fill areas. After a trial shot in a new mold, additional vents may be required.


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