I made three of these Mess Containment Carts many years ago. I had a metal fab shop bend them up with a small lip. I made them 2′ x 3′ and 34″ tall and used 2×2 tubing for the frame and also had a shelf for the bottom sheared up and fitted them with caster wheels. They are great when taking in oil dripping blocks and heads. They also are great when taking a block out of the hone to keep the floor clean.
Randy Torvinen
Torvinen Machine
Menahga, MN