monoprice select / wanhao i3 spool holder on power supply

I have a fixed 18" cube space, so having the spool holder above is not an option. I designed this to use the existing 2 screws on top of the power supply so the spool is inline. This should take 10 hours to print using 15% infill (hex is preferred). This is pretty stiff and sturdy for what it is. I have included holes on both sides to mount in either orientation. It does require you to buy longer M5 screws (10-12mm long).