30 Amp Power Supply (PSU) Underslung mounting

Continuing on my quest for an IKEA Lack enclosure, I figured it would be better to mount the PSU outside of the printer enclosure to help keep it cool. There are a few mounting solutions around but I wanted the terminal block to be covered up and the supply cable not to be sticking out sideways so I set about designing my own.
The terminal cover end is a remix of http://www.thingiverse.com/thing:2149707
Anet A8 Replacement PSU Cover LH-360W by Sparkyman1. This is a good design but I found th