I set my belt sander upside down on my workmate and then lean the bow into it with the other tip supported close to the ground. It takes a little adjustment to get the nagles right. Once you have the leaning angle, position and angle of the belt sander OK all you need to do is to turn it on and press the bow tip onto it. this way it is simple to make sure the sander produces a good flat surface. Once done turn the bow over and do the other end. This can give a seemless transition for the overlay.
Hope this works for you.
Mark in England
