I bought a (5 ton?) bottle jack from Machine Mart which does the job admirably, but the 3 piece slot together handle, combined with the built in "lost motion" in the pump linkage makes the job a lot harder than it should be. The handle hit the ground, then the skirt and hardly applied any decent lift to the ram until you get a bit of height going. A length of 3/8" BSP steam pipe with the end diameter reduced slightly to fit the jack was a big improvement .