Another block (I), 2" × 4", and 6 feet long, with four bolt holes, will be required for the tail end of the frame, to keep the rails (A) two inches apart at that end.
The Tail Stock.—This part of the structure is made of the following described material:
Procure a scantling (J), planed, 4" × 4", 24 inches long, the upper end of which is to be provided with four bolt holes, and a centering hole (15). At the lower end of the piece is a slot (16) 8 inches long and 1½ inches wide, and there are also two bolt holes bored transversely through the piece to receive bolts for reinforcing the end.
A pair of cheekpieces (K), 2" × 4", and each 12 inches long, are mitered at the ends, and each has four bolt holes by means of which the ends may be bolted to the upright (J).
Then a step wedge (L) is made of 1⅜" × 2" material, 10 inches long. This has at least four steps (17), each step being 2 inches long. A wedge 1⅜ inches thick, 10 inches long, and tapering from 2 inches to 1⅜ inches, completes the tail-stock.
The Tool Rest.—This is the most difficult part of the whole lathe, as it must be rigid, and so constructed that it has a revolvable motion as well as being capable of a movement to and from the material in the lathe.
Select a good 4" × 4" scantling (M), 14 inches long, as shown in Fig. 243. Two inches from one end cut a cross gain (I), 1½ inches deep and 1 inch wide, and round off the upper edge, as at 2.
Then prepare a piece (N), 1 inch thick, 8 inches wide, and 10 inches long. Round off the upper edge to form a nose, and midway between its ends cut a cross gain 4 inches wide and 1½ inches deep. The lower margin may be cut away, at an angle on each side of the gain. All that is necessary now is to make a block (O), 8 inches long, rounded on one edge, and a wedge (P).
