Speed Selection; Turning Between Centres; Bowl Turning - Jet JWL-2442-M Mode D'emploi

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 1500
50-100 700
100-150 500
150-200 370
200-250 300
250-300 250
300-350 220
350-400 180

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 21).
The spur drive centre locks into the cleaned spindle taper
and can be removed with the knockout rod (Fig 22)
General
Finishing
Cutting
RPM
RPM
3200 3500
1600 2500
1100 1600
800 1200
650 1000
500 800
450 700
400 600
Fig 21
Mount the centred work piece between the spur drive
centre and the tailstock mounted live centre
Turn the tailstock hand wheel until the live centre well
penetrates the workpiece. Reverse the hand wheel by
one quarter turn and lock the tailstock spindle.
Turn the workpiece by hand to see if it rests securely
between centres and can be rotated freely.
For turning between centres the tool rest is set
approximately 3mm higher than centre line (Fig 23 and
24).

6.5 Bowl turning

Turn outside of bowl between centres.
Turn a short tenon the size of the hole in the faceplate
(T, Fig 25). This will allow centring the workpiece.
Fig 22
Fig 23
Fig 24