Imagine a parallelogram. It is made from aluminum extrusion for the longer legs of it, and aluminum plate for the sides.
I believe with the loads this will see, this parallelogram will try to make more of a rhombus
That is not acceptable. I was thinking just get a plate to mount in the back of this parallelogram, that would add excellent resistance to twisting. But, though my stock pile is pretty good, its not that good!
So my thoughts were to add angle supports, like this
Except these angle supports would actually be touching the other material!
So my question is, what would be the angle of these angle supports to maximize resistance to deforming?
THis all has to be much more overbuilt than I had expected, for all I know I might have a 4HP motor in the middle of this...