Speed Selection; Turning Between Centres - Jet JWL-1440VS Mode D'emploi

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.
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
Roughing
Diameter
RPM
mm
< 50 1250
50-100 700
100-150 480
150-200 400
200-250 350
250-300 350
300-350 350
Fig 14
Fig 15
General
Finishing
Cutting
RPM
RPM
2500 2500
1600 2500
1100 1600
900 1250
600 1100
480 900
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.
The spur drive centre locks into the spindle taper and can
be removed with the knockout rod (Fig 17)
The live centre locks into the tail stock taper and can be
removed by rotating the handwheel counter clockwise (Fig
18)
Fig 16
Fig 17