Guarantee consistent wall thickness: This can aid in even cooling and ultimately helps to avoid deformations, sink marks, flow lines, and incomplete injections.

Design ribs correctly: Incorrectly designed ribs can cause warp, sink marks, voids, and breakage. Ribs should be designed to be 60% of wall thickness or less, with small base radii and enough spacing between ribs.

Avoid sharp corners: Sharp corners can cause parts to stick to the mold during ejection and can result in voids if there isn’t sufficient pressure. Rounded internal and external corners and edges can ensure a smooth flow of material and a clean ejection.

Regulate temperature: A warmer mold allows the plastic to flow more easily, resulting in better surface quality. On the other hand, to maintain the utmost consistency in the mold’s surface temperature, cooling lines should be set straight in the core and cavity blocks.