Overview of digital design files for 3D printing of orientation tools. Shown are images of renderings of the two pin designs for (A) lateral and (B) dorsal orientation, (C) a pin stripe and (D) the baseplate design. (E, F) Photographs of printed and assembled tool: (E) lateral and (F) dorsal. Arrows in A and E point to the small pin generating the mold for the yolk sac for lateral orientation. Arrowhead in D points to the clip used for anchoring the baseplate to the microtiter plate.