Bosch Power Tools 400 Series XPR manual Operation, Keyless Chuck, Learning To Use the Rotary Tool

ASSEMBLY (CONTINUED)

Keyless Chuck

The keyless chuck is used in place of the stan- dard collet and collet nut to easily and quickly remove and install some accessories.

The keyless chuck holds various accessories with shank sizes 1/32" to 1/8" and is intended for light duty accessories such as drill bits, sanding drums, polishing accessories, wire and bristle brushes and cut-off wheels.

1. See steps 1—3, Changing Collets on page 7 to install the keyless chuck.

2. Thread the keyless chuck onto the rotary tool shank.

Keyless Chuck

3.Use the supplied wrench to complete- ly tighten the keyless chuck if you are unable to apply sufficient tightening pressure to hold the bit or accessory.

OPERATION

	Learning To Use the Rotary Tool
Getting the most out of your rotary tool is a						4
matter of learning how to let the speed and						2
the feel of the tool in your hands work for you.
		The first step in learn-
		ing to use the rotary
		tool is to get the “feel”
		of it. Hold it in your
		hand	and	feel its
		weight	and balance.
		Feel the taper of the				For best control in close work, grip the rotary
housing. This taper permits the tool to be
grasped much like a pen or pencil. The						tool like a pencil between your thumb and
unique comfort grip on the nose allows for						forefinger.
added comfort and control during use.					tool
!	WARNING	Always hold		the
		away from	your		face.
Accessories can be damaged during
handling and can fly apart as they come
up to speed. This is not common, but it
does happen.		When holding tool, do not
!	CAUTION	cover the air vents with
your hand. Blocking the air vents could
cause the motor to overheat.						2
IMPORTANT! Practice on scrap material first
to see how the tool’s high-speed action per-						4
forms. Keep in mind that your rotary tool will						The “golf” grip method is used for more aggres-
perform best by allowing the speed, along						sive operations such as grinding or cutting.
with the correct Dremel™ accessory and						Usually it is better to make a series of pass-
attachment, do the work for you. Do not put
pressure on the tool during use, if possible.						es with the tool rather than to do the entire
Instead, lower the spinning accessory lightly						job with one pass. A gentle touch gives the
to the work surface and allow it to touch the						best control and reduces the chance for
point at which you want to begin.						error.
Concentrate on guiding the tool over the
work using very little pressure from your
hand. Allow the accessory to do the work.

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