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Old 12-08-2011, 07:41 PM
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motorhedfred motorhedfred is offline
Motorized Bicycle Elite Member
Join Date: Jul 2009
Location: United States
Posts: 379
Default Re: Hydroforming a fuel tank

The whole premise behind hydroforming is that you can't compress water. You can however, compress air. You might get some metal deformation, but no where near as much as with water. I think someone here mention leak testing a homemade fuel tank by pressurizing it with air to submerge it in water. It gave the flat surfaces a more rounded appearance.

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