Sanding flat with a belt sander....tricky?!
I've just made a large, heavy (40mm thick, 400 x 300mm) chopping board with glued on edges. I made the edges sit about 1mm proud of the chopping surface, and as such need to sand the edges flush with the chopping surface. I've done this a number of times, however always seem to end up with a chopping board that isn't perfectly flat. In bad cases, it 'rocks' ever so slightly when placed on a flat surface such as a granite kitchen bench.
Any tips on how to sand the board flat with a belt sander?
PS - I finish the sanding with my orbital, progressing up through the grades - however feel I need to use the belt sander to get rid of the 1mm high edges as the orbital is just too slow.