by Brian Rajewski One sure thing about clamps is that they’re never close enough when you need them. That’s why I devised this rolling rack. Its 4-in. locking swivel casters easily plow through sawdust and over cracks and power cords (see Source, right). To make this rack doubly useful, I designed it to work as an outfeed support for my tablesaw. Its 2×6 top inclines at a …