Variable desktop DC power supply

This is a set of model files to build a variable desktop DC power supply. I've decided to build this because I did not like how my store-bought DC power supply did only had 1 set of binding posts. I often work with loose strands of conductors and/or USB interface, and I wanted a compact power unit that can be put right next to the project piece I am working on.One feature I want to make a comment on, is the use of the banana plugs. I did not have any spring loaded connectors on hand to use w