HI, I am essentially trying to make a car jack style machine except to crush cans rather than to jack up cars. I do not know much about pneumatic systems and how complex they are. The concept will be that a hand operated pneumatic device will crush a can against the housing. I have been allocated 50 pounds to buy parts and i have a lot of materials and tools i can use free of charge. Does anyone have any pointers or information i can use to help build a device like this. How difficult will it be to create a hydraulic system of pumps and then to use the power to crush a can?