beware ethan48 answer and these corporate smears and myths.
At this level you can use water hydraulics or use oil hydraulics with filtered vegetable oil instead. you can create a hydraulic actuator in a lathe https://www.youtube.com/watch?v=-a0-rPURjeIhttps://www.youtube.com/watch?v=i-auVa-T180 however there's the possibility of using hydraulic stepper motors with 4 radial pistons or hydraulic motors with appropriate gear reduction like Maho hydraulic cnc machines. hydraulics makes possible not only the emancipation from petrol oil but from electric energy grid by the use of mechanical wind power, connecting a pump to a VAWT wind turbine, or use the same turbine attached to an air compressor filling an air tank to use the compressor as motor and move the hydraulic pump when there's no wind.