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Design Guidelines
Recommended wall thicknesses by resin type

Resin Recommended Wall Thickness (mm)
ABS 1.143 - 3.556
Acetal 0.762 - 3.048
Acrylic 0.635 - 3.810
Liquid crystal polymer 0.762 - 3.048
Long-fiber reinforced plastics 1.905 - 25.40
Nylon 0.762 - 2.921
Polycarbonate 1.016 - 3.180
Polyester 0.635 - 3.175
Polyethylene 0.762 - 5.080
Polyphenylene sulfide 0.508 - 4.572
Polypropylene 0.635 - 3.810
Polystyrene 0.889 - 3.810
Polyurethane 2.032 - 19.05

The table* shows wall thicknesses Protomold recommends according to resin. Please note that thin walls only work on small parts and thicker walls are required where the resin has a long way to flow (Protomold makes parts with dimensions of about 6mm to 375mm or more).

* Adapted from www.manufacturingcenter.com

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