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Now that makerbot has made a dual head option for the thing-o-matic one of the coolest toys should now be possible to print without stopping and restarting the build process to add support material.
Marked WIP until someone successfully prints one.
Use a normal plastic for toy-truck11-needs-support.stl (exactly the same as the original, copied here for convenience). Use a dissoluble plastic for toy-truck11-support-dual-extruder.stl. Soak the finished model in the solvent of choice (ie water for http://store.makerbot.com/makerbot-pva.html) until the support material is gone. Then marvel at your new toy.