Product walls that are designed too vertically can make it difficult to release an injection-molded part from its mold. Designers therefore need to consider a draft angle, which is a slight taper applied in the direction of mold opening. This angle helps the part release more smoothly and reduces the possibility of surface scratches caused by friction against the mold. The required angle should not be chosen arbitrarily because it depends on wall depth, material type, and surface texture.

Draft angles should be considered before mold manufacturing begins. Changing the angle after the mold has been completed may require additional tooling work. Kadujaya lists product design optimization and in-house injection mold manufacturing among its capabilities. By considering draft angles during the design stage, product development can be planned for smoother and more consistent manufacturing.

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