You must check there is NOT a double shape overlapping in your 3d model…
I’m attaching the ‘cleaned’ model, in which I have deleted the double shapes…
(in your step file ‘SOLID011’ and ‘SOLID025’, ‘SOLID012’ and ‘SOLID026’)
(to check it just simply hide a shape and check if there is an other visible on the same place)
Applying the tool to that ‘cleaned’ model, it works flawlessly.
Here the reduced file and the resulting Sketch (I simply added a circle to the sketch to finalize a pad poly structure):
Lowpass-2-2-cleaned.FCStd (49.3 KB)
lowpass-2-2-cleaned.kicad_mod (4.5 KB)
