Summary If you don't using some air mixer with acetone vapor bath, you must begin! Time for smooth surface decreasing by 2-3 times, and evenly spreading. In files you can find solidworks project, where you can change hole (diameter and height) for shaft of your motor (I used from old cd-rom like this), and also you can change height and length of blade for your box size Print Settings Printer Brand: RepRap Printer: Prusa Anet A6 Rafts: No Supports: No Resolution: 0.35mm Infill: 50% Notes: Remember, don't use ABS for printing this, I used PLA (= Sizes in project