[rfuerst911sc]

Not sure how you fill angle material with sand ? This is a one time project for me . This will be a backyard/DIY solution . For what I know right now I will build a bending jig out of wood . I will kerf cut the aluminum where I want to bend it . I will also heat the aluminum .

If it works I am set . If it doesn't work my plan B will be to rivet in the straight sections and make radius pieces out of flat sheet stock . May not be as strong as one piece but the two radius corners are only supporting a mattress .

The weight of myself and my wife along with the mattress will be more centered . And that framework will be 2 1/2 " square aluminum sitting on top of the angle material on the perimeter . I am fairly confident I can pull this off .