MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
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This is so cool. I printed one out on my Replicator 2x but the pins seem way too small and it keeps falling apart. I tried to tweak the pegs using blender which led to many more problems.

I'm a student so I was able to download Autodesk Inventor which allowed me to open the PERA file, however I am not at all familiar with the software and still can't seem to scale up the pegs so it's a tighter fit.

Any ideas? Would it be possible to make another version with less tolerance so I can get a tighter fit?

I see that you mention different ABS reacts differently, but I've tried 3 different colors and even PLA with the same results