Use a small center drill to provide a guide for a larger drill on
top of the rivet stem and drill away the upper portion of the stem to
destroy the lock. See Figure 1-12b.
Drive out the rivet stem, using a tapered steel drift pin or a
spent stem. See Figure 1-12c.
Drill nearly through the head of the rivet using a drill the same
size as the rivet shank. See Figure 1-12d.