I'd like to make a log splitter myself, they are too expensive to buy. So what I need is a frame with a steel plate at one end which the log rests on, and an V shaped steel plate at the other end driven by an hydraulic ram, 4 ton or more ought to do it.

But I know little to nothing about hydraulics. I need some help...

What do you suggest I get the ram off? (in a scrap yard) and how would I then set it up to be mechanically pumped by the operator. Instructions and ideas please.