Fig 14
Scraper (B, Fig 13)
, used for diameter scraping and to
reduce ridges.
Skew Chisel (C, Fig 13),
used to make vees, beads, etc. (Fig
15). The bevel of skew is parallel to the cut.
Fig 15
Parting tool (D, Fig 13),
used to cut directly into the material,
or to make a cut off. Also used for scraping and to set
diameters.
6.3 Speed selection:
Use low speeds for roughing and for large diameter work. If
vibrations occur, stop the machine and correct the cause.
See speed recommendations.
Speed recommendations
Workpiece
Diameter
mm
Roughing
RPM
General
Cutting
RPM
Finishing
RPM
< 50
1250
2500
2500
50-100
700
1600
2500
100-150
480
1100
1600
150-200
400
900
1250
200-250
350
600
1100
250-300
350
480
900
300-350
350
350
600
6.4 Turning between centres:
With a ruler locate and mark the centre on each end.
Put a dimple in each end of the shock. Extremely hard woods
may require kerfs cut into the spur drive end of stock (see Fig
16.
Fig 16
The spur drive centre
locks into the spindle taper and can
be removed with the knockout rod (Fig 17)
Fig 17
The live centre
locks into the tail stock taper and can be
removed by rotating the handwheel counter clockwise (Fig
18)
