I use a 4'x8' flat top and will make the water table. Cutting free hand, I wont need a table as big as you bought. Using a CAD, bigger is better, so you will be golden on a full sheet of steel!.. I used to go to a steel yard when I lived in Colorado, they ran a Hypertherm 50a on a 10'x 20' CAD table!!! Fun as He77 watching it rip through 1" plate!! They built the table and installed the Axis arms.