A tool supporting bar for supporting tools on an implement comprises an elongated tubular perimeter wall defining an interior and including a side wall portion. The bar includes a reinforcing wall located in the interior of the perimeter wall and mounted on the perimeter wall in a manner effective to increase bending resistance of the perimeter wall to a force applied in a direction normal to a plane of one of the side wall portion. A method of forming a tool bar comprises providing an elongated tubular perimeter wall defining an interior and including a one side wall portion positioning a reinforcing wall in the interior of the perimeter wall and mounting the reinforcing wall on the perimeter wall in a manner effective to increase bending resistance of the perimeter wall to a force applied in a direction normal to a plane of the side wall portion.
