Hello everyone,

I have a geometry like below, the big pile has radius skirt_radius and height skirt_height. I want to write a Python code to select the big half cylindrical surface. I tried skirt_face=part.faces.getByBoundingBox(-skirt_radius, 0, 0, skirt_radius, skirt_radius, skirt_length). However, it selects the semicircle on top has well. I can use similar operation to solely select that semicircle (part.faces.getByBoundingBox(-skirt_radius, 0, 0, skirt_radius, skirt_radius, 0)), but I couldn't find a way to get it away from the skirt_face without damaging the GeomSequence. I need the GeomSequnce to create Set. 

Could you please help me find how to achieve such operation or is there any workaround? Thank you very much for your help!