I cut one plate to make the carrier so it would not hit the power supply. One piece is 10'' x 2', the other is 7" x 2 1/2". I screwed them together into a "T". They could be made from acrylic, see the derivative by duncan. The bed is 10" in the X direction, so the print area is relatively square with the screws on the outside. The drill template is too small. You can position your Y smooth rods to fit around your power supply, and adjust the dimensions for your plate accordingly. I think you could make most extruders work with this design.