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18
CAUTION
For best control in close work, grip the rotary
tool like a pencil between your thumb and
forefinger (Figure A).
Whenever you hold the tool, be careful
not to cover the air vents with your hand.
This blocks the air flow and causes the
motor to overheat.
Usually, it is best to make a series of passes
with the tool rather than attempt to do all the
work in one pass. To make a cut, for example,
pass the tool back and forth over the work,
Cut a little material on each pass until you
reach the desired depth. For most work, the
gentle touch is best. With it, you have the
best control, are less likely to make errors,
and will get the most efficient work out of the
accessory.
The “Golf Grip” method of holding the tool
can be used for more aggressive operations
such as grinding a flat surface or using cutoff
wheels (Figure B and Figure C).
Practice on scrap materials first to see how
the rotary tool's high speed action performs.
Keep in mind that the work is done by the
speed of the tool and by the accessory in the
collet. You should not lean on or push the
tool during use.
Instead, lower the spinning accessory lightly
to the work and allow it to touch the point at
which you want cutting (or sanding or etching,
etc.) to begin. Concentrate on guiding the
tool over the work using very little pressure
from your hand. Allow the accessory to do
the work.
Figure A
Figure B
Figure C