Hydroforming is a great way to form bends,cones and other odd shapes using just water pressure from an ordinary garden pressure washer. This video shows how to adapt the hose from the washer and tests out what shapes work and what doesn't. There is a more in depth write up on my website here http://www.colinfurze.com/hydroforming.html follow me on twitter https://twitter.com/colin_furze and my Facebook page https://www.facebook.com/pages/Colin-furze/521680751253584