The frame is built using 2X4's and a combination of different length deck screws. I always use the square drive screws. They take a lot of torque, can be removed easily and won't strip out. I also used a generous amount of wood glue on each mating surface.
I installed washing machine feet on the bottom of each leg. I bought these at the hardware store for about $3.50 each. They were left over from the benches I built. Because my floor slopes toward the doors for drainage, I need to be able to level the table at each leg. I tapped the holes just to get the legs started.
I topped the table with 1/4" birch plywood. I counter sunk the screws to keep the top smooth. This way, rather than using expensive 3/4" smooth plywood, I could use OSB and replace the top when it becomes damaged.
Because the fuselage is tack welded on the table, it can get a lot of burn marks. So, with the replaceable top, I can make the table just like new for only $12.