The top and bottoms are hexagon shaped and made of 1/4" steel. Each side is 25cm long. The sides will probably be similar. The height of the box interior is 150mm minimum. All the electronics (black and grey boxes) must fit inside the box. On the top of the box are mounted some motors, electronics, and switches. There could be as much as 600lbs placed on top of this box.
I can’t seem to dream up a design that’s satisfying. the current design is welded together. @Big_Mak suggested the sides be made of C-channel bolted to the top and bottom, but I can’t find any with a 150mm wide channel.
I need to be able to access the contents of the box, easily tighten all the fasteners (you can see some bolt holes from the top plate), and still withstand the shaking when the machine is moving literally every direction.
So… what do you suggest?