I have a 36 x 72 table on the BB&B risers installed in my sewing room. It's a great set-up for cutting fabric...now, if I could just move some of that fabric off it so that I could cut out some new projects...so that... Oh, that's a different problem. :wink:
An additional hint...I use the same size table with risers as a surface for wrapping Christmas presents. My husband and grown sons (each > 6' tall) appreciate the extra "wrapping height", as well.