4-way clamps are such a helpful tool in any woodshop. Everyone should have at least one set. 4-way clamp not only clamp your wood side-to-side, but they also act to help keep the panel glue line even, which reduces time spent fixing the glue-up afterward. Before woodworkers had a Biscuit or a Domino® joiner that kept the edges aligned, using cauls was the way to accomplish that. Remember, just because something isn’t the latest technology doesn’t mean it’s not effective.