Build optimization is dependent on a part’s function (conceptual model, functional prototype, manufacturing tool or end-use part). Based on the part’s function, the user must select the appropriate orientation to balance or optimize surface finish, strength or build time of the part.
1.1. Surface Finish
Part orientation impacts surface finish due to the process of slicing and printing
the part in increments in the Z direction. Orienting the part so that curved or
angled surfaces are built parallel to the Z axis will result in smoother surfaces.
Proper orientation of a part can dramatically increase feature strength. Small
features can become stronger by simply rotating the part. Generally, orienting a feature parallel with the build layer maximizes feature strength.
Part orientation can affect support material usage and build speed of the part.
Rotating a part to a different orientation can decrease support usage and the
build time of a part.
For more information, download the full best practices document here.