MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.

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I printed the Traxbot entirely on my replicator 2. I do use RepG and sailfish normally, but I did slice a few of these with makerware. I did not need any rafts or supports for these pieces. the base would have been almost impossible for me to print before I got my glass beds and began using aquanet hairspray to coat the bed with. Information on this if you want/need it can be found on the makerbot operator google group. If you search "cold glass" you should find several threads on printing to cold glass. My base came out flat and smooth with zero warping. Only other upgrade you need is that spring loaded extruder-any one of them is better than the plunger.
I think I printed the base with 20 percent infill for strength on the arms. Other than that I used pretty standard settings.