Speed Selection; Turning Between Centres; Bowl Turning - Jet JWL-1015 Mode D'emploi

Parting tool (D, Fig 7), 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 1500
50-100 700
100-150 500
150-200 400
200-250 300

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 11).
Mount the centred workpiece 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.
Fig 9
General
Finishing
Cutting
RPM
RPM
2200 3300
1500 2200
1000 1500
700 1000
400 700
Fig 10
Fig 11
For turning between centres the tool rest is set approximately
3mm higher than centre line (Fig 12 and 13).

6.5 Bowl turning

Turn outside of bowl between centres.
Turn a short tenon the size of the hole in the faceplate
(T, Fig 14). This will allow centring the workpiece.
Mount the workpiece (A, Fig 17) directly to the face plate
using 4 wood screws (C) from the back. Be careful to use
screws short enough not to interfere with the cutting process
but long enough to hold the workpiece securely to the face
plate.
If screw mounting is not allowed at all, the work may be glued
to a backing block (D) and the backing block screwed to the
Fig 12
Fig 13
Fig 14