Operation Video here: http://www.youtube.com/watch?v=zdTjQ6AbVxQOne layer of printing (high-res, macro) here: http://www.youtube.com/watch?v=P98S2NxbNbM3d printed spinner knob for rotary encoder jog/shuttle controlMade on MakerBot CupCake #1024 (MiseryBot)Use with Digi-Key 987-1195-ND: http://search.digikey.com/scripts/DkSearch/dksus.dll?keywords=987-1195-ND ( TT Electronics/BI EN12-HS22AF20 )The STL is high-resolution / huge.You may want or need to re-save the STL in OpenScad at a more-coarse resolution.Just change the "$fs=0.25;" line to a larger (more coarse) number and then re "F6" and re-save STL.I had heard of dipping parts in acetone to smooth them. I gave that a shot. Pretty amazing, pic attached.