I've been bouncing some of these shapes and ideas around and I'm left with the feeling that, while the idea really appeals to me, I'd end up with the combined table element somewhere in the region of 170+mm deep if I try to fit the motors in the way planned. For some reason that just doesn't feel... right. I have no idea if there is a mechanical reason for this to be wrong, it just seems odd.

This design lark is harder than it looks, especially when you have a tendancy - nay, burning desire! - to reinvent the wheel at every opportunity :confused: