Orientation

Producing the best part begins in the setup of the part using the 3D Sprint preparation software. Orienting the part correctly is critical to first-time printing success. Acrylate materials shrink more than epoxy formulations. Thus, it will often be important to reduce the X/Y cross section per layer to minimize the amount of shrink. Avoiding sudden transitions from thin wall to thicker sections will lessen the effects of differential shrink in the sidewalls of the part.

TIP: When designing the part, be mindful of best practices for injection molding. This includes trying to achieve uniform wall thickness throughout the part, where applicable. Reducing stress concentration points such as 90-degree angles and improving with a small radius will make the parts even stronger.

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Figure 1. Part orientation. Note the image on the right has uniform wall thickness.