Always collapse those floating points to the shop’s actual fabrication tolerance before writing your panel tags. If the CNC operator can only hold 0.5mm anyway, letting your script track sub-micron noise just bloats the procurement schedule with hundreds of ghost item codes.

Thermal expansion on the truck ride over shifts that aluminum by half a millimeter anyway, making the model's precision pure fantasy. Now I force every parametric workflow through an explicit 1mm rounding component before a single schedule gets generated.