Tool Tips - Bosch 1533A - NA 10 Gauge Nibbler Operating/Safety Instructions Manual

• Never start the nibbler with the punch and die
in contact with the material being cut.
For clean and fast cuts, hold the nibbler so that
the cutting head is at a right angle to the cutting
path, with the body of the tool parallel to the
corrugations. Move the cutting head in and out
of the corrugations, constantly keeping the head
at a right angle to the material being cut.
Feed the nibbler into the work with a minimum
of pressure. Let the nibbler do the work. If the
nibbler doesn't cut correctly, check for a dull
punch or die. Dulling will be apparent as more
pressure is required to feed the nibbler into the
material. Burrs will also show along the cut
edge. A harder material will dull the punch and
die faster than a soft material.
Always direct the cord toward the rear, and
away from the nibbler. Keep it away from sharp
edges.
Secure or clamp small workpieces to be cut to
prevent slippage.
Always use recommended lubricant for the
material being cut. Lack of lubricant will shorten
punch and die life.
Slide "ON-OFF" switch with Lock
The tool is switched "ON" by the slide switch
located at the side of the motor housing. The
switch can be locked in the "ON" position, a
convenience for long cutting operations.
TO TURN THE TOOL "ON" without locking
it, slide the switch forward by applying pressure
ONLY at the REAR portion of the button.
When pressure is released the switch button
will snap to "OFF" position.
TO LOCK THE SWITCH "ON", slide the
switch button forward and press "IN" the
FRONT portion.
TO UNLOCK THE SWITCH, simply press
and release the REAR portion of the button.
Switch is spring loaded and will snap back
automatically.
CAUTION! Do not start the nibbler with the
punch and/or die in contact with the workpiece.
Side Handle
The side handle 1 used to guide and balance the
tool can be threaded into the front housing on
either side of the tool, depending on personal
preference and comfort. Use the side handle for
safe control and ease of operation.
BM 3609929431 4-04
Extending the side handle
The side handle can be swivelled using the
handle extension 2. Thus gives you a body
position which is more stable and less fatiguing.
Fix handle holder 2 with a hexagon socket
screw at the desired angle left or right in thread
12. Screw a side handle 1 right or left as appro-
priate into the handle holder.
Setting the hold-down guide
Holds the unit so that the lower die 4 abuts on
the under side of the metal sheet which is to be
machined.
Always adjust the hold-down guide 6 to the
appropriate material thickness. To do this loosen
the hexagon socket screws 5. Set the hold-down
guide on the sheet and allow for approx. 1.3 mm
play.
Tighten the hexagon socket screws 5.
The nose on the hold-down guide 6 serves as a
cutting marking. Straight cuts may be executed
easily by guiding the nibbler along a straight
edge.
A preboring of 1.625" (41mm) diameter is
required for internal cut-outs.
When cutting, guide the unit with a slight thrust
in the cutting direction.
Cutting takes place during the downward move-
ment of the die.
The nibbler is especially designed for working
with flat sheets of high alloy and stainless
steels.
Always use both hands to guide the nibbler.
Do not use force; this will lead to premature die
and punch wear.
Before running the nibbler, be sure the punch
and die are properly lubricated. See "Punch and
Die Lubrication" section.
Never start the nibbler with the punch and die in
contact with the material being cut.
Always be sure material is resting on lower die
during operation.
Be sure the Guide or Die screws have not
loosened over time.
Chips are ejected downwards.
6
6
Nibbling using marking

Tool Tips

4/22/04, 9:30 AM