About this 3D model

I tried to use sketchup to convert the Planetary Gear Calling Card into .stl files and failed. My better angels lost the battle for sanity and humility and I did a traceout of it with Blender. Because y'know, ~I~will~not~be~stopped~by~mere~tools~ and all that mad scientist rant stuff. I am a bit concerned about kerf, in that the MakerBot *doesn't have it* and as such all the gears might be slightly too large. If that happens one *might* be able to get away with just shrinking the planets. Here's the specs I fed the gear script, fyi: Planets: Teeth: 14 Radius: 7 Addendum: 1.0 Dedendum: 1.2 Pressure angle 30 Tooth width: 1.5 Sun: Teeth: 17 Radius: 8.5 Addendum: 1.0 Dedendum: 1.2 Pressure angle 30 Tooth width: 1.5 Ring: Teeth: 45 Radius: -22.5 Addendum: 1.0 Dedendum: 1.2 Pressure angle 30 Tooth width: 1.5 http://www.thingiverse.com/thing:390