It's for adding a second extruder to the UM2 printer. It's all the hardware you need for the mark2 project. Although you can ignore that PCB and some of the cables and the magnets and instead use it to turn your printer into a UM2+ but again the fans are useless.
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gr5 2,224
It just so happens that I bought 3 of those and can tell you a lot about that product. It has a flaw. The side fans will not work. I forget the details but I think they are 5V fans and you need 12V fans. Maybe. I forget the details but expect to have to get fans. Other than that it seems to work quite well. I didn't use any of the 3 for myself but gave them to 3 other people (at cost - no profit) and all 3 said the kit was fine other than the fans.
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reibuehl 42
What is the benefit of that kit? It looks like a UM2+ Feeder with a replacement printhead but also has a PCB.
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