I redesigned some of the parts by editing the raw STL files in sketchup, making it easier to assemble and take away the need of other than printed parts. Full credit goes to Maldex: http://www.thingiverse.com/maldex For his model: http://www.thingiverse.com/thing:41882 The "Bubble Wheel" was created using openSCAD and this design: http://www.thingiverse.com/thing:539080/#filesEvery part is printed once unless it says different in the file name. Triangle_gear_3x.stl could be shrunk to 97% when using PLA, for ABS it will probably be more. Assemble everything as it should be and hotglue crankshaft to small_cranked_gear and bearer_ax to Y_shape.