p.138
HAND - FORGING
Fig. 86. Sinking-Tool
of 3/4-in. square or hexagonal tool steel. The sink at the .top is filed smooth without any sharp corners and is about || in. wide and half as deep. The tool is to he caught in a vise. A top tool is also used, to fit into the sink in the lower one. This tool is shown in Fig. 87. It is simply a small
Fig. 87. Top Tool
Hand Forging by Thomas F. Googerty