Don´t spend thousands of dollar on a ready-made vacuum former, make your own for a couple of bucks!
Hydroforming is a process that can be a blessing when you want to make smooth inflated-like objects from flat pieces of steel, but has been overlooked because most people doesn’t realize how easily it can be done. In this video, the mad genius colinfurze demonstrates how you can modify your (or your neighbors) pressure water to hydroform anything you want! And if you think this is just a cute trick, you’re wrong. Just watch the video below and see how colinfurze uses this very technique to make a fully working pulse-jet engine!
Making big plastic shells can be extremely expensive when using vacuum forming or other forms of manufacturing techniques. But if the shell you want is of a simple bubble type form, you may want to consider blow forming. In this video from Gary Lavarack, you can learn just how easy it can be to make your own polycarbonate shells by blow forming them. The result is a perfect finish without any defects, and an added bonus is that if you apply your paint on the inside, the transparent layer of plastics would look gorgeous, like a deep layer of professional clear-coat! Just take a look at the finished blow formed car body in the video below from MAKE.