Boxing for mini lab psu

I was tired of looking for the correct transformer or the right pack of batteries just to try out some electronics and buying a Lab PSU costs a lot of money so instead of converting a PC ATX or a LED Switching PSU, I thought why not plug "something" in front of it which could stop any mistakes like a short-circuit, allowing a variable voltaje and setting a max current to my project.

The build can be found [HERE](https://www.instructables.com/id/Easy-and-Cheap-Lab-Regulator-for-Any-PSU/)