variable power supply from a computer psu

[Electrowan]

I am planning on making a variable psu from a computer psu for electronics projects without using batterys& such is therer anything i should watch out for and what will i need other than the psu and the tools

 

[Kiwi]

This is how I made my one;https://www.electronicspoint.com/projectlogs/variable-voltage-lab-power-supply-using-psu.30/
https://www.electronicspoint.com/projectlogs/variable-voltage-lab-power-supply-using-psu.30/