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Plastic Molding Design Tips

You don’t have to be an expert to design parts for plastic molding (injection molding). And although you don’t want to consider plastic molding for very short runs, plastic molding can pay off in some cases in as little as a hundred pieces.

In designing parts for plastic molding here are the few key things to remember:

  • Keep wall thickness uniform.
  • Avoid large solid areas that will not cool properly.
  • Allow for 2 degree draft to allow your part to be extracted from the mold without difficulty.
  • Avoid sharp inside and outside corners.
  • Avoid very thin walls.
eMachineShop goes into design considerations in more detail here.

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