Hey Tom
Agreed, it’s not.
That would be the next, the third interesting point: If your table is not plan, is the QCW Frame able to stay plan when it has to bear the load of the machine, the wasteboard and the workpiece? Is the QCW Frame stiffy, rigid enough to not adopt skewness/warping of the underlying table or ground?
In the promo video of Any Surface Leveling System (that no one should forget to order together with the QCW Frame) it is offered a solution to ensure planeness of the frame on uneven grounds - but the question is, is the QCW Frame able to retain planeness by itself? Or is the Any Surface Leveling System necessary because it is not?