Tool Selection; Speed Selection; Turning Between Centres; Bowl Turning - Jet JWL-1442 Mode D'emploi

6.2 Tool selection:

Successful wood turning does not
result from high speeds, but rather,
from the correct use of turning tools.
A perfect and sharp wood turner tool
is a precondition for professional
wood-turning.
Major Tools:
Fig 6
Gauge (A, Fig 6), most important
wood turner's tool.
Used for rapidly cut raw wood into
round stock, for turning bowls and
plates, for turning beds, coves and
other detail (Fig 7).
Fig 7
Scraper (B, Fig 6), used for internal
and external diameter scraping and to
reduce ridges.
Skew (C, Fig 6), used to make vees,
beads, etc. (Fig 8). The bevel of scew
is parallel to the cut.
Fig 8
Parting tool (D, Fig 6), used to cut
directly into the material, or to make a
cutt 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 General
Roughing
Diameter Cutting
RPM
mm RPM
< 50
1600 2500
50-100 700 1600
100-150
500 1250
150-200
370 700
200-250
370 500
250-300
370 500
300-350
370 370

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 9).
Fig 9
The spur drive centre locks into the
spindle taper and can be removed
with the knockout rod.
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.
6
Finishing
Turn the workpiece by hand to see if it
RPM
rests securely between centres and
can be rotated freely (Fig 10).
2500
2500
1600
1250
900
700
500
For turning between centres the tool
rest is set appr. 3mm higher than
centre line (Fig 11 and 12).

6.5 Bowl turning:

Turn outside of bowl between centres.
Turn a short tenon the size of the hole
in the faceplate (A, Fig 13). This will
allow centring the workpiece.
Fig 10
Fig 11
Fig 12