We break down how to avoid common injection molding issues like warping, sink marks, and shrinkage. Learn why uniform wall thickness, smart coring, and proper rib design are essential for high-quality, mold-ready parts.

Injection molding success starts at the design stage. From consistent wall thickness to proper draft angles and stress-reducing features, these core principles minimize risk, improve part quality, and reduce time to market.

There are few things more satisfying than slamming the cap back on your peanut butter jar after making a PB&J. That smooth snap? It’s no accident. That repeatable seal comes down to smart injection mold part design—specifically, a clever little feature known as a bump-off.

If you anticipate frequent design changes in a specific area of your part but don’t want to delay moving into production with your final resin, consider building that section of the tool with core and cavity inserts. This approach lets you quickly and cost-effectively swap in new inserts for iterative features, all while staying in a full production process.