I had a dream last night, we've all seen the challenges we face building these machine frames and ensuring they are strong enough/ and straight enough etc. then once made we wish we had made them stronger.

why would you not make a big wooden box, situate it where you wish the machine to stay for the rest of eternity, then fill the box to desired level with wet cement / re-bar

once dry, remove box and start building off that (ie, mount your rails directly to the concretre block)

perfectly flat (because of gravity) no resonance no flex. Im sure there is a massive reason why not but thought id ask just to satisfy my mind

matt