My dad had a GE Elec-Trak. It was based on a Wheel Horse chassis. The mower deck had three(?) blades powered by separate high speed motors. Keeping the blades balanced was critical to minimize vibration. The mower deck often cracked.
I have done some mig welding with a vise mounted on an outdoor stainless table. Most of the spatter stuck to the table leaving a rusty mess!
It would be better to have a hot rolled plate.