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Ultimaker 2 with Extrusion Upgrade Kit compared to UM2+

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Barely any difference.  You even get a sticker to affix a "plus" on the logo on the printer so people can't tell the difference.


The former is ever so slightly better most likely because it probably has a 5th stepper driver on the PCB.  Newer UM printers tend to come with the 5th stepper driver removed.  Older ones tend to have the 5th.  It's not normally used but if you want to upgrade to dual extrusion via the "mark 2" method, then having the 5th stepper for dual extrusion is great.


Also if you upgrade you will have the "old" hardware left over hopefully and can use that to do the mark 2 upgrade.


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There might be a small difference in the hotend cooling fan logic depending on how old the Ultimaker 2 is. On older UM2 the fan runs continuously while at some point Ultimaker updated the design of the electronics and included a logic circuit which makes that fan run only when the hotend is hot. Every UM2+ had this right from the start.

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