Some scrap wood, a few pieces of sheet metal, a quartet of old gear motors, and a few basic hand tools. That’s all it takes to build an omni-bot with Mecanum wheels, if you’ve got a little know-how ...
I found this old Hand Sheet Cutter in a scrap metal yard. The owner was using it on daily basis, so he couldn't sell it to me, but he agreed to allow me to restore it, so I'm sharing results with you.