Consider a modification or machining operation that generated a part with edges like those shown in Figure when the minimum edge length in the System Settings menu is set to 0.02 mm.

When the minimum edge length is checked by either the model advisor or part checker, edge 1 is reported as invalid as it is shorter than the minimum edge length. This output is displayed only when min Edge is selected in the System Settings dialog box (Click File > Settings > System. On the Model Advisor pane, under Check, set the min Edge.)