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Hi, just to double check with you also.
If I use 4 x https://shop.prusa3d.com/en/electronics/48-heated-bed-mk2b.html (to get 40cm3 work space) and Makeboard (uses Ramps pinout). Would a 12v50a sufice to not burn everything around? I am also not sure if the Makeboard board can handle all 4 heated beds at once (I guess here the SSR saves the day).
I have a clue how to wire everything, I am just scared not to fck things up. hehe.
The rest of the printer uses Nema 17 stepper motors and classic build for which I use a 12v20a power supply - included 1x 200x200 Heated bed.