I am going to build an 8′ x 11′ sidefeed, outfeed, worktable around my tablesaw ( I own and operate a 1 man custom cabinet shop). Besides using it for sheet goods support, I want to use it for assembly. I want it as FLAT and STABLE as possible. Has anyone developed a system and built something like this of this size? Maybe some kind of an adjustable screw system from above to keep it flat? Or type of construction that’s flat without needing adjusting? Steel stringers? Any ideas?