My friend Kelly brought his 110 mig welder and a chop saw over to help me build the roller base for the wing rotator. The base is made from four pieces of 2.5 inch square tubing 3/16 wall. After the square base was welded together we laid out and welded the fixed 4 inch v groove casters that the plywood wheels will roll in. We then flipped it over and welded four 6 inch swivel castors with brakes to the corners. Came out nice, very heavy but nice! Thanks Kelly!