Whether you're prototyping with a partner like Formioo or working with custom molding specialists such as https://www.hollyplasticparts.com/plastic-injection-molding/ , avoiding these mistakes can save time, cost, and hassle.

Let’s break them down:

1. Uneven Wall Thickness

Inconsistent walls cause warping and shrink marks. Keep them uniform where possible and use gradual transitions.

2. Sharp Thickness Changes

Sudden shifts in thickness create stress points. Smooth out the geometry to help material flow better and avoid defects.

3. C-Shaped Designs Without Support

Open ""C"" shapes often warp or deform. Use ribs or redesign to improve strength, especially when using glass-filled materials. ...