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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You can use everthing on 12 volt, I never used the fan extender module. It depends what components you have. My experience is that is easier to go on everything with 24 volts but you can use the bed on 24 volts and the rest on 12. You need 2 powersupplies in that case. The bed on 12 volt takes ages to warm up to 80 degrees and higher