In this project I used a piece of scrap metal and a cheap hydraulic car lift 2 tons.
The whole construction can withstand more than two tons and can be upgraded easily to a powerful 20+ tons Hydraulic press simply by placing a bigger hydraulic car lift.
The conversion did in the hydraulic car lift was put to normal oil suction inlet a tube that reaches the top of the outer cylinder that works as oil tank. With this conversion the pump pumps hydraulic fluid when the hydraulic lift car is upside down.
This modification operates in almost all hydraulic car lift of this type.