A simple way to make a jig for holding the blade in place is to use a block of wood and a pair of clamps. First, cut a piece of wood that is the same width as the blade. Then, drill a hole in the center of the block that is slightly smaller than the diameter of the blade. Finally, clamp the block to the saw table and insert the blade into the hole. The jig will hold the blade in place while you make your cuts.