Operating Speeds; “On/Off” / Speed Switch; Electronic Monitoring; Needs For Slower Speeds - Dremel Lite 7760 Operating/Safety Instructions Manual

1600A01A91.qxp_7760 3/4/19 1:55 PM Page 16
To select the right speed for each job, use a
practice piece of material.
▶ "On/Off" / Speed Switch
The tool is controlled by the blue
"On/Off" / Speed Switch 8 located on
the topside of the recessed part of the
housing (Fig. 6).
Fig. 6
TO TURN THE TOOL "ON" gently slide
the switch 8 up with your thumb. The
tool will start working at a speed of
8,000 RPM.
The speed may be adjusted during
operation by continuing to gently slide
the switch 8 up with your thumb.
▶ Settings for Approximate
Revolutions:
Speed Setting
1
*2
3
4
*2 is the maximum speed setting for
wire brushes.
You can refer to the charts on pages
28–31 to determine the proper speed,
based on the material being worked and
the type of accessory being used. These
charts enable you to select both the
correct accessory and the optimum
speed at a glance.

▶ Electronic Monitoring

Your tool is equipped with an internal
electronic monitoring system that helps
to maximize
performance by limiting the current to

Operating Speeds

7 8
Speed Range
8,000 RPM
14,000 RPM
21,000 RPM
25,000 RPM
motor and battery
the tool when overload and stall
conditions occur. If you stall the tool for
too long, or bind the bit in a work piece,
especially at high speeds, the tool will
automatically turn itself off thanks to
the fallback built into it. Once this
happens, slide speed switch to "0"
position, simply take the tool out of the
material you were stalled in, turn it back
on again, adjust the speed if necessary,
and continue using it. When the battery
is close to empty, the tool may shut
down automatically more frequently
than normal. If this happens, it is time
to recharge the tool.

▶ Needs for Slower Speeds

Certain materials, however, (some
plastics and precious metals, for ex -
ample) require a relatively slow speed
because at high speed the friction of the
accessory generates heat and may cause
damage to the material.
Slow speeds (15,000 RPM or less)
usually are best for polishing operations
employing the felt polishing ac ces sories.
They may also be best for working on
deli cate projects as "eggery" work,
delicate wood carving and fragile model
parts. All brushing applications require
lower speeds to avoid wire discharge
from the holder.
Higher speeds are better for carving,
cutting, shaping, cutting dadoes or
rabbets in wood.
Hardwoods, metals and glass require
high speed operation, and drilling
should also be done at high speeds.
Many applications and accessories in
our line will
performance at full speed, but for
certain materials, applications, and
accessories, you need slower speeds,
which is the reason our variable speed
models are available.
To aid you in determining the optimum
operational speed for differ ent materials
and different accessories, we have
constructed a series of tables that
appear on page 28–31. By referring to
these tables, you can discover the
recommended speeds for each type of
accessory. Look these tables over and
become familiar with them.
Ultimately, the best way to determine
the correct speed for work on any
16
provide the best