Injection sink marks: check the part and process together
Sink marks are often discussed as a material issue, but rib design, wall thickness, packing and cooling all affect the result. The visible surface can lag behind what happens inside the section.
Processing guide
Sink marks are often discussed as a material issue, but rib design, wall thickness, packing and cooling all affect the result. The visible surface can lag behind what happens inside the section.
Use the same part, mould and visual inspection method for a fair comparison trial.
