When designing a part with threaded holes attempt to make other non-critical holes use the same size as the tap drill.

Target draft for injection molded products is 2 degrees. As little as 0.5 degree draft can be manufactured, however cost will be approximately 3x.  To get the advantages of a low draft surface use “low draft” ribs to minimize dragging during ejection.

To prevent “bridging” when routing wires harness on internal bends include an “S” bend.  The “S” bend will allow the harness to route on an internal corner with no “bridging”. In addition the “S” bend will allow for variations in harness length without causing “bridging” or other unintended interference