MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
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Interesting, It's a fun idea; but there is either going to be a lot of wear on the non-driving side because it is counter rotating, or there has to be quite a bit of play.
It looks like you've limited the turns on the worm to keep the profiles working so I can tell some thought went into this. Nice!