Summary I used this to build the Digital Sundial http://www.thingiverse.com/thing:1068443 Customized version of http://www.thingiverse.com/thing:193647 Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=193647 Print Settings Printer Brand: PrintrbotPrinter: Printrbot PlusRafts: NoSupports: NoResolution: .2mmInfill: 100% Notes: Use a brim because the point of contact with the bed is minimal. I used 8 lines. Instructions Using the following options: head_type = button nut_resolution = 0.5 thread_step = 2 step_shape_degrees = 45 nut_thread_outer_diameter = 9 slot_depth = 2 type = bolt drive_type = phillips head_diameter = 10 outer_diameter = 14 nut_type = normal slot_width = 1 thickness = 2 nut_diameter = 12 resolution = 0.5 drive_diameter = 5 nut_step_shape_degrees = 45 texture = exclude inner_diameter = 8 facets = 6 non_thread_diameter = 0 nut_thread_step = 2 countersink = 2 wing_ratio = 1 nut_height = 6 non_thread_length = 0 head_height = 5 thread_outer_diameter = 6 thread_length = 20