Material

Cherry or maple, 2" x 2" x 8".

Exercise

To turn a cup of the form and dimensions shown in Fig. 93.

• Place the material between the lathe-centres, and turn it to the form shown in Fig. 94, taking measurements from Fig. 93. Remove as small an amount of material from the bottom of the bowl as may be done and have the shape well defined, as shown in Fig. 94. When turning the part [a], that is to be fitted to the chuck, turn the sides straight and parallel, as on this being done depends the possibility of fitting it to the chuck.

Make a chuck from material 2 inches in thickness, and exercise the same care in turning the hole for the end of the bowl-piece that was exercised in turning the end of the bowl - that is, have the sides parallel and perpendicular to the face, and the opening of such size that the work will be a tight fit 4 and not quite reach to the bottom. The shoulder turned on the bowl-piece ought to rest against the face of the chuck, as shown in Fig. 96. If it be found on starting the lathe, after fitting the work into the chuck, that the work runs untrue, it will be better to fit another chuck rather than try to correct it. When the bowl-piece has been fitted to the chuck so that it turns true to its axis, cut a small V shaped opening in the centre of the end, as shown in Fig. 95, using the acute corner of the skew chisel to make it. This opening is used to start a bored hole into the bowl. The hole may be made with a twist-drill, used as shown in Fig. 96 - that is, with the cutting end in the small opening in the bowl, and the other end in contact with the cone-centre held in the tail-stock. The bowl, not the drill, is revolved during the •boring, and this is done with the driving-belt so placed as to give the slowest speed. The drill is forced into the wood by advancing the tail-stock spindle, and is prevented from turning by holding its end in a wrench. The depth of hole in the bowl is measured on the drill, and may be marked before starting to bore. The inside of the bowl is finished to shape with the 1/4-inch round-nose chisel used, and supported by the tee rest in the manner shown in Fig. 97. It will be found safer to have the cutting edge a small distance above the centre of the cup.

Fig- 93.

Fig 94.

Fig. 95.

Fig. 96.

Fig. 97.

After the inside of the bowl has been finished, turn the stem to the form shown, without removing the cup from the chuck, and then varnish and polish it. It may be cut from the chuck with a parting tool.