Working Advice - Bosch GST Professional 14,4 V Original Instructions Manual

OBJ_BUCH-624-001.book Page 24 Tuesday, January 29, 2008 5:02 PM
24 | English
Controling the Stroke Rate
Increasing or reducing the pressure on the
On/Off switch 2 enables stepless stroke-rate
control of the switched-on machine.
Light pressure on the On/Off switch 2 results in
a low stroke rate. Increasing the pressure also
increases the stroke rate.
The required stroke rate is dependent on the
material and the working conditions and can be
determined by a practical trial.
Reducing the stroke rate is recommended when
the saw blade engages in the material as well as
when sawing plastic and aluminium.
After longer periods of work at low stroke rate,
the machine can heat up considerably. Remove
the saw blade from the machine and allow the
machine to cool down by running it for approx.
3 minutes at maximum stroke rate.

Working Advice

When sawing small or thin workpieces,
always use a firm support.
Contact Protector
The contact protector 11 attached to the casing
prevents accidental touching of the saw blade
during the working procedure and may not be
removed.
Plunge Cutting (see figures E–F)
Plunge cuts may only be applied to soft ma-
terials, such as wood, gypsum plaster
boards, etc.!
Use only short saw blades for plunge cutting.
Plunge cutting is possible only with the mitre an-
gle set at 0°.
Place the machine with the front edge of the
base plate 5 on to the workpiece without the
saw blade 12 touching the workpiece and
switch on. For machines with stroke rate con-
trol, select the maximum stroke rate. Firmly
hold the machine against the workpiece and by
tilting the machine, slowly plunge the saw blade
into the workpiece.
When the base plate 5 fully lays on the workpiece,
continue sawing along the desired cutting line.
1 609 929 N47 | (29.1.08)
Parallel Guide with Circle Cutter (Accessory)
For cuts using the parallel guide with circle cut-
ter 18 (accessory), the thickness of the material
must not exceed a maximum of 30 mm.
Parallel Cuts (see figure G): Loosen the locking
screw 17 and slide the scale of the parallel guide
through the lead 16 in the base plate. Set the
desired cutting width as the scale value on the
inside edge of the base plate. Tighten the lock-
ing screw 17.
Circular Cuts (see figure H): Set the locking
screw 17 to the other side of the parallel guide.
Slide the scale of the parallel guide through the
lead 16 in the base plate. Drill a hole in the work-
piece centred in the section to be sawn. Insert
the centring tip 19 through the inside opening of
the parallel guide and into the drilled hole. Set
the radius as the scale value on the inside edge
of the base plate. Tighten the locking screw 17.
Coolant/Lubricant
When sawing metal, coolant/lubricant should be
applied alongside cutting line because of the
material heating up.
Bosch Power Tools