When cutting threads, it is good practice to put a few drops of oil on the leadscrew even though this is oiled from the apron "one shot" system. Also, put a few drops of oil on your hand and run your hand over the feed rod. STOP LATHE before oiling feed rod! This will not only lubricate the parts but keep them from rusting. Oil both bearing in the back box daily. THE COMPOUND REST cuts as top slide may break in the middle of the T-slot. When taking heavy cuts, always have top slide flush with bottom slide so the metal is all in compression. THIS IS WRONG. SLIDE OVERHANGS TOO FAR FORWARD. PUTS UNNECESSARY STRAIN ON MIDDLE OF T-SLOT. FIG.
10 – COMPOUND REST The compound rest unit consists of compound rest bottom slide (1), compound rest swivel slide (2), com- pound rest top slide (3), cross feed dirt guard (4), and cross feed nut (not illustrated). The bottom slide is fitted to the dovetailed cross slide of the carriage and is equipped with a taper gib to provide means of adjustment for wear. The gib adjusting screws in the ends of the bottom slide can be tightened or loosened to obtain the proper adjustment. The bottom slide should be adjusted so that it will move freely on the dovetail and still be a snug fit. The cross feed nut is attached to the bottom slide and runs on the cross feed screw (6, figure 9).
The compound rest gets Its movement on the carriage through the cross feed screw and nut. The compound rest swivel slide (see 2, figure 10) is fitted on top of the bottom slide and swings around to the angle selected. It is clamped in position by two T- slot bolts whose heads are in a circular T-slot in the bottom slide. The swivel slide is graduated in degrees so that the compound rest can be set accurately at the desired angle. This feature is used when turning angles on bevel gears, boring holes having short steep tapers, turning and grinding centers, etc., where the angle is too steep to use the taper attachment.
On the swivel slide a dovetail is planed, to which is fitted the compound rest top slide (see 3, figure 10). The top slide is also fitted with a taper gib for adjust- ment. A screw with a micrometer dial, which engages the nut mounted in the swivel slide, provides hand feed to the compound rest top slide. Caution: Note position of compound rest slide in the two extremes. In the forward position the slide overhangs the rest to which it is clamped. In this pos- ition it is not advisable in any lathe to take roughing THIS IS WRONG TOO. SLIDE OVERHANGS TO RIGHT. REQUIRES EXCESSIVE TOOL OVERHANG THIS IS BEST.
TOP SLIDE SHOULD BE FLUSH WITH BOTTOM SLIDE TO GIVE GREATEST SUPPORT TO CUT- ING TOOL FIG. 11 – CORRECT SETTING OF TOP SLIDE IS SHOWN IN LOWER PHOTO. THE TOOL POST FIG. 12 – TOOL POST ASSEMBLY 12