[Illya Tsemenko] decided to build his own thermocouples from bare wire. [Illya] is interested ... and knocked together a quick welding rig using a PC power supply and graphite electrode from ...

if you don’t mind a bit of steel drilling and your project case being obviously that of a PC power supply then they are very robust enclosures. The same goes for the wiring loom of motherboard ...

A computer power supply converts AC into multiple DC voltages ... Their name is derived from the type of circuit used to change the voltage. For more details, see transformer.