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 one a while back on end in PLA, never had an issue with it being brittle. Easily holds as much as you can carry. I did however print mine fairly solid, which is about a $1.50 of filament for two. Worth it for something that will last and make carrying bags easy. I'm only here now because I lost mine and need to print some more. If you're worried about layers breaking apart, just print at the maximum limit of your filament to 'melt' the layers better, or anneal it in an oven after, or sand it down to smooth it out which will bond the outer layer better.