Hydroforming in the Garage with a Pressure Washer

metal pillow

Ever heard of hydroforming? It’s a manufacturing process used to form sheet metal into shapes using water at extremely high pressures. Not something you can do at home… unless of course you’re [Colin Furze].

Hydroforming works by evenly distributing pressure via water (conveniently, in-compressible) against sheet metal inside of a mold. Many automotive parts are created in this fashion. Typical systems run at around 15,000 PSI.

After building a giant pulse jet engine (complete with butt) to fart on France, [Colin] got the idea from a YouTube comment to try to do hydroforming at home — bending the sheet metal for the giant derriere wasn’t that easy. Hydroforming on the other hand is a surprisingly simple process. Weld some sheet metal together, add a pipe fitting to connect your cheap pressure washer and boom — hydoformed metal parts.

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