Lol - what a bunch of geeks we are!! I don't have a wrist callous, I have that part of my hand just off the edge of the table. And I lift my mouse all the time. But the alternate pivot point then is your elbow. So I have callouses/rashes on both tips of my elbows from the armrests of my computer chair that need perpetual cortisone ointment treatment to stay reasonable. Oh lordy.... I think I'll go out and ride my bike :o) :] Fish