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

Sometimes a design demands a “zero” or very small radius inside corner. This can be completed at minimal cost by designing a “pilot” hole.  The rest of the machining can still be completed with large high speed cutting tools.

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.