Rubric for judging quality of 3D printed models.

The primary purpose of determining the quality of the print is whether one could lay an implantable electrode grid on the surface without significant deviation. Good represents aesthetically and functionally satisfactory prints. Fair represents prints with minor aesthetic imperfections that do not significantly impact the function of the print. Poor represents prints that contain deviations that are unsatisfactory for use. An overall print grade is determined by the lowest partial grade, i.e. a print must attain a grade of Good in all three qualities to be considered Good overall. All prints displayed in Figs 1 and 2 were graded as Good. (DOC)