OPERATION
SWITCH ACTION
WARNINg:
is switched off. Always check that the tool's speed adjustment dial is set to its
lowest speed.
WARNINg:
operator comfort during extended use. Apply caution when locking tool in "ON"
position and maintain a firm grasp on the tool.
your rotary tool uses a toggle style switch mark with the international symbols for the ON/OFF
positions, "I" (ON) and "O" (Off). When the switch is depressed in either position it remains or is
locked ON/Off until the switch is depressed in the opposite direction.
-To start the rotary tool, press the "I" (ON) side of the switch downwards.
-To stop the rotary tool, press the "O" (Off) side of the switch downwards.
OPERATING SPEEDS
your rotary tool has an operating speed range of 8,000- 30,000 rpm. The numbers appearing on the
speed dial provide the tool operator a rough idea of how fast the bit is rotating. The tool's speed is
infinitely adjustable throughout the entire travel of the speed dial. The following chart will provide a
good guideline for the rotating tool speed for various dial settings:
Speed Range guidelines
Switch Setting
0-2
2-3
3-4
4-5
5-6
unlike tools designed for a specific purpose, the rotary tool may perform a wide variety of operations
in various types of materials. Practice and experience using the rotary tool on different projects with
different bits is the best teacher of which speed is more ideal for use on a specific material than other
speed settings. Here are some very basic guidelines:
use slower speeds on plastics, precious metals, or anything else that may easily damage due to heat
generated by the tool's bit. Consider slower speeds when performing finely detailed work on sensitive
or thin material like eggshell or fine wood carving.
Wire and bristle brushes should not be used at speeds in excess of 15,000 RPM. Higher speeds will
not increase their efficiency, but cause the wires to dislodge from the wheel possibly causing personal
injury.
Higher speeds can best be used for cutting, routing, carving, and cutting other shapes in wood.
Drilling should be done at high speed as should most work on hardwoods, glass, and many metals.
Start at slower, more comfortable speeds and work your way up to the ideal speed for the bit, the
material, and the style of work being performed.
Variable Speed Rotary Tool
Operator's Manual
Before plugging in the tool, always check to see that the tool
The switch can be locked in "ON" position for ease of
Speed Range RPM
8,000 – 10,000
10,000 – 15,000
15,000 – 20,000
20,000 – 25,000
25,000 – 30,000
GRT2103-40