working on another air cylinder for my pneumatic swage press.. i thought a 3in cylinder would be enough, and it almost was, but it was just barely too weak to press the point forming punch home.. it like a smegging 1/16 inch going all the way to the stop when i was point forming my .30cal. this cylinder will give me an extra 700lbs of force and should give me enough to swage that extra 1/16 inch..
the end caps and the piston are just regular aluminum plate that i had laying around forever. the rod was another air cylinder that was a long bugger, about 3ft long but the bore was only 2 inches. i cut the rod in half to get a 12inch rod and threaded one end and cut a taper for a Jacobs chuck on the other end.. the tube is just a piece of 4-1/4ID 1/8in wall aluminum seamless tubing.. i turned the piston out today and will do the end plates tomorrow. i also still have to go and get some rubber O-rings for the seals.. should give around 2,000lbs of force for 125psi.. should be great being my arbor press i have been using for the swaging is just a 1 ton itself and im not doing nowhere near max force..