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Fig. 6
20
preparation of the materials
•
To turn long pieces of wood, the material must be cut
into a square form beforehand.
•
To turn a cross-arm, the material must be cut to size in
its natural state as well. Saw out the rough form with a
band saw. An octagonal form is recommended for the
material so that vibrations are reduced.
Centering of the workpiece (Fig. 06)
Centering the prepared workpiece is an important opera-
tion to be performed before placing it into the machine.
Centering consists of measuring the middle point of the
workpiece and marking it with a center punch.
Make a depression of 1.5 to 2 mm in the middle point.
If the workpiece has not been centered exactly, strong
vibrations will develop as a result of the imbalance. It
is possible that the workpiece could be hurled outward
as a result.
NOTE: Exact centering of the workpiece produces smooth
concentricity.
While working with the turner
•
Work with a rough workpiece should be conducted at
low speeds.
•
Only after the wood has been pre-turned (the pre-turn-
ing operation is complete once the basic form of the
workpiece as well as an even concentricity have been
achieved) can the speed be raised.
TuRN OFF AND uNpLuG ThE MOTOR FIRST
•
The live center must be readjusted from time to time
with the hand wheel. This operation only should be
performed when the motor has been turned off.
The tailstock center should rest firmly in the wood.
•
Turn the workpiece by hand to check if it rests se-
cured.
Marking of the workpiece
Sometimes the workpiece has to be taken out before
it has been completed. It is advantageous to mark the
workpiece and the driver with a pencil first.
When placing the workpiece back in the machine, match
the marks on the workpiece and the driver.
Specialized literature
Specialized shops offer appropriate specialized litera-
ture about wood turning. They can be a great help for
beginners in their work as well as a source of ideas for
experts.
m Electrical connection
The installed electric motor is completely wired ready
for operation.
The customer's connection to the power supply system,
and any extension cables that may be used, must con-
form with local regulations.
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