Sherline Lathe User Guide and Specifications

FIGURE 5—Turning between centers with a faceplate and drive dog.
The dog is driven by fitting it into one of the faceplate holes. This method of turning is
ideal for bar work or turning of steps on a bar. The tailstock center must be greased to
prevent overheating. (An optional "live center"—such as P/N 1191—turning on ball
bearings is the solution preferred by most machinists.) The headstock spindle has a Morse
No. 1 taper in the spindle nose. The spindle thread is 3/4-16 TPI. Accessories held in the
spindle using the Morse No. 1 taper can be removed with the use of a knockout rod (not
supplied) approximately 3/8" diameter and 6" long. The bar is inserted through the back
of the spindle, and accessories, such as centers, can be removed with a few taps. The
tailstock spindle is equipped with a Morse No. 0 taper and accessories such as drill
chucks and centers can be removed by turning the handwheel counterclockwise until the
accessory is ejected.
Center Drilling
Because the work turns and the drill does not on a lathe, it is necessary to use a center
drill before a standard drill can be used. Due to the flexibility of a standard drill bit, it will
tend to wander on the surface of the rotating work whereas a center drill is designed to
seek the center and begin drilling. Cutting oil is recommended for all drilling operations.
A center drill should be withdrawn, cleared of chips and oiled several times during the
drilling of a hole to keep the tip from breaking off.