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And you want a D-shaped shafthole if desired. If(shafthole_cutoff_arc_height != 0) { 2 * shafthole_radius + 2 * shafthole_radius + 2 + (enable_stem ? Stem_height : 0) + knob_height - sphere_indents_cutdepth; for (z = [0 : sphere_indents_count]) { z_position = sphere_indents_radius + (enable_stem ? Stem_height : 0) + knob_height - sphere_indents_cutdepth; for (z = [0:sphere_number_of_indentations] for (z = [0:cylinder_number_of_indentations] cylinder(r1=radius_of_cylinder_indentations_bottom, r2=radius_of_cylinder_indentations_top.

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