Here is the 3-D picture. It can be rotated and zoomed. Part visibility can be toggled.

The design process is to purchase a press at the auto supplier. For 2/0 cable, it needs to be at least 15 tons. Also purchase a hammer press.

As you can see in the 3-D model, the additional parts consist of a plate below the press (3/4" thick), the press , 4 all-thread rods- 3/4", 8 Ea. 3/4" nuts, a jack spacer (orange), and an upper plate.

The plates have 4 holes for the threaded rod. Note that I have drilled 4 clearance holes in the jack, matching the holes in the plates. The 4 holes are symmetrical with respect the jack force centerline.

Before purchasing the jack, verify that 4 holes can be drilled in a manner to clear the jack handle.

You need to have the plate on the bottom, because the jack base is not strong enough to take the load. Cantilever style.

The jack spacer (just below the hammer jack) is just an inverted cup. It's job is to be a platform upon which the hammer jack rests. It bears aginst the verymost top of the jack, and extends downward by a distance to have at least 1/2" overlap with the precicion diameter jack shaft, that extends under prerssure. It is bored out on a lathe to be a couple of thousands clearance with the jack shaft. I would make the wall thickness 3/8, and the overall length 1/2" longer that the cup depth. This keeps hammer jack square. To determine the cup depth, I would extend the jack to where 1/2" of the precision diameter rod is exposed. Measure the distance from the beginning of the rod to the top of the jack. This is the cup depth.

The threaded rod length is the sum of the following lengths: 1). the hammer press, in the extended position, where you are able to insert the lug, 2). the inverted cup overall length. 3.) the jack height from the base to where the rod comes out of the base (the moving part) 4). 1.5 " for the 2 plates (top and bottom) 5). 2 nut thicknesses 6). Plus an inch to be safe.

When assembling, make sure the nuts are torqued evenly. Under slight load. This assures that the 4 rods share the load evenly.