The plans include complete build instructions, bill of materials list for all steel, hydraulics and misc. hardware, hydraulics schematics and Online hydraulic suppliers list where you can comparison shop for reasonably priced parts.
My design goals were to create something I didn't have to bend over all day to use, or waste a lot of steps picking up off the ground what I just split. the table stores quite a few logs for splitting and I can load up the log lift as well. the table height is waist high for easy split and load operation. I also wanted to protect the engine/pump from those stray logs that end up breaking things. the controls are all below table height for the same reason and the log lift control is out front for access from either side.
You will find that the two-way horizontal wedge moving at a reasonable (safe) speed will split more wood per hour than a faster moving one-way splitter.
The video shows a 5" bore cylinder with 13 GPM pump, 10 second wedge speed one-way. The wood I’m using is 2 year seasoned maple. I have split over 10 cord with this splitter and it has been very reliable and easy to use.
5" bore cylinder @ 13 GPM = 10 seconds one-way
5" bore cylinder @ 16 GPM = 8 seconds one-way
4" bore cylinder @ 13 GPM = 6.5 seconds one-way
4" bore cylinder @ 16 GPM = 5 seconds one-way
The plans show designs for 10" tall wedge and log stops at each end, enlarged volume 8" x 8" square tubing oil reservoir, larger engine area, split hydraulics for the main cylinder and log lift, pipe mount 2000 lb trailer jack, class 2 - 3500 lb 2" ball trailer hitch and torsion suspension axles.