An efficient method to get an entire set of hammers square on the shanks. It relies on an excellent travel job as its basis, so that is assumed to have been done. Every other hammer is held in an up position, about equivalent to let off position, using a straightedge. The raised hammers are spaced so that the gap between each of them and its two neighbors - at the shank - is equal. The straightedge is removed, allowing the hammers to fall to rest position. Now the shanks are heated and twisted as needed to make the hammers that had been raised evenly spaced between their respective neighbors. The process is repeated for the other half of the hammers.