[bitluni] took matters into his own hands and built this nifty DIY hole punch for light-gauge sheet metal. A little backstory will probably help understand why [bitluni] needs so many holes.

Pun ching services provide a process that creates a hole through a workpiece ... The material is usually a sheet but it may also be in rolls. Sheet metal: Metal components can be formed using a punch.

Amazing idea! making sheet metal punching holes tools ...