Molded-in textures (like leather grain) require 1 additional degree per 0.001" of texture depth.
) on all vertical walls to allow the part to slide out of the mold easily without sticking. Radii & Fillets: injection mold design guide
The gate is the orifice where molten plastic enters the cavity. Its location and size dictate the filling pattern, weld line positions, and residual stress. Molded-in textures (like leather grain) require 1 additional
Aris remembered his part: a simple clip. He had used a single edge gate. That was fine for strength, but the flow front split and recombined around the boss, creating a weak weld line. That’s where it snapped. He needed to move the gate or add a small overflow well to trap the cold, recombined plastic. Its location and size dictate the filling pattern,
To ensure a successful part, designers must adhere to three core pillars: .
