Files for various descriptions, countersinks, frame and hack saws.
With a knife work the plaster under the edge of the fish, and let it harden; then put two countersinks in each side.
The same method applies to counterbores and countersinks, which, when so made, take less power to drive.
Countersinks, Fig. 136, are reamers in the shape of a flat cone, and are used to make holes ...