Injection Mold Design Guide — [2021]

Thick sections pull inward as they cool, creating surface depressions (sink marks).

) known as a draft angle. This reduces friction during ejection, preventing scuffing or damage to the part and the mold. Ribs and Bosses injection mold design guide

Cooling accounts for up to 80% of the injection molding cycle. Inefficient cooling costs money. Mold design must prioritize cooling channels (waterlines). Thick sections pull inward as they cool, creating