Injection Mold Design Guide [exclusive]

The narrow opening where plastic enters the cavity. Gate selection (e.g., edge, sub, pin, or hot tip gates) depends on part aesthetics, material viscosity, and automated production requirements. Place gates at the thickest section of the part to ensure proper packing. The Cooling System

To optimize mechanical strength and material flow, use the following proportions for internal and external corners: : External Radius ( Rocap R sub o ) : injection mold design guide

: Enforce uniform wall thickness throughout the part and add structural cooling lines closer to the thicker areas of the mold tool. Knit Lines (Weld Lines) The narrow opening where plastic enters the cavity

Standard designs use straight drilled lines. Complex geometries benefit from conformal cooling channels created via 3D printing (DMLS), which follow the exact contours of the part. The Cooling System To optimize mechanical strength and