Quote Originally Posted by Musht View Post
Toronto the week before, there has been a few others.
If you look at pictures of the Toronto collapse it is very clearly a scaffold structure that has collapsed and no report has been released so far, let alone one claiming truss beam failure. Just because stages collapse and truss systems are often to hang lights above a stage doesn't mean that all truss designs are fundamentaly flawed.

Anyway, given that the thread is about a cnc gantry built from multiple 4mm thick pieces of steel box section I doubt very much that any force is going to be generated that will come close to causing structural failure, death and destruction just so long as an invading column of tanks don't decide to take a short cut through my garage. :)

I was more interested in a comparison with the usual designs of gantry, like for example a couple pieces of alu extrusion bolted together or the unsupported L shape, bolted to plate supports at either end.