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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It was discussed so many times. Please read manual and comments. If you want to embed it into the printer, you need 12V, 40-120W LED PSU of sizes mentioned in build manual. Don't ask me for some particular model or brand. It depends on what is available for eg. in you local electro shop. Otherwise any 12W 40-120W notebook PSU can be used too, but you will have to find a way how to unplug it.

Power depends on the overall consumption of the printer. Measure the resistivity of all your heaters and calculate the consumption by OHM law. Find PSU with wattage that is bigger than the requirement. For eg. my machine have 3.6Ohm heater and 4.8Ohm heatbed. PSU is 12V so the total consumption is 12x12/3.6 + 12x12/4.8 = 70W, you can add 1W per every fan and 1W for electronics, if want to be really sure.