good thinking with the knobs, did you do a build post of your enclosure? i would love to see it. I did plan on trying to level all my wood the best i can. unfortunately i don’t have a table saw only my radial arm saw. and while i could rip the 2x4s i’m planning on using in the way you describe. i’m not sure its worth the risk (ripping on a RAS is about the most dangerous thing you can do with it). my thought for leveling is that i will build the table “close enough” to level, then use it to build a torsion table top so that i know everything is flat. though my father gave me a good idea the other day. if i want it really flat i should buy some granite counter top and use that XD seems a bit heavy to me, but i do wonder about using other counter tops to achieve a cheap super flat surface.