Hot bed for OboXL3D

Given the large size of the printer (600mm), for the heat bed  I decided to use two pad (from china), with dimensions each 300x300mm.

The problem is that each pad requires roughly 300w power supply.
So instead of a *big* power supply of more than 600w,  I decided to use 2*350w power supply at a reasonable cost (35€) each.
To control these power supply, instead of using SSD relay with doubts about the end of life, I use two electronic boards with  mosfet.
That works perfectly already on my other printer 3D, and it decouple the electronic+heat head+motors+fans from the Bed power supply.  More than 10A is used by bed, reste of electronic requires only 1A. A large current consomption from BED does not impact the rest of the printer.

The Bed regulator control board schematic comes from here:
https://www.youmagine.com/designs/ultimaker-heated-bed-mosfet-relay-hack-v2
and I adapted in on prototype PCB with strips.
*Be careful to NOT link both GND , or you may damage all*

Each power supply is 350W, model meanwell  LRS-350. I printed the protection case and adapt plusgs and swtich.  See http://www.thingiverse.com/thing:1221600

Orange power supply is 12V, for electronic board, motors, heat head, fans.
Black power supply is 24V and for each PAD of the heat bed.