Just come across some strange behaviour with EdgeFillet. It won’t add a 6mm fillet to the edge of these polysurfs -
6mmEdgeFillet.3dm (392.7 KB)
The ploysurf was made by extruding some curves by 150mm and then using the offset surface command (10mm) with solid and loose enabled.
However, the FilletSurf command works at 6mm.