Around 30+ yrs ago I was talking to a hydraulic engineer about my lack of a press. He told me you can modify a motorcycle fork leg to use as a press ram. The cheaper all steel versions are probably safest to use. Use fork oil drain hole and a brake master cylinder to pressurise it. The availability of used parts at the time meant the only expense would have been steel to make framework and a couple of needle valves to direct flow (using two different master cylinders or it would take 'forever' to get any decent amount of travel)