Bosch GCM 12 GDL Professional Original Instructions Manual page 26

OBJ_BUCH-1464-001.book Page 26 Monday, May 9, 2011 3:47 PM
26 | English
Ceiling Strips/Mouldings (According to US Standard)
To cut ceiling strips/mouldings facing flat on the saw table, the mitre angle must be set to 31.6° (saw
52°
table must be turned left or right) and the bevel angle must be set to 33.9° (glide arm tilted left or right).
The following table includes information on sawing ceiling strips/mouldings.
38°
Settings
Ceiling strip/moulding
Inner corner Horizontal mitre angle
Bevel angle
Positioning of work-
piece
The finished work-
piece is located...
Outer corner Horizontal mitre angle
Bevel angle
Positioning of work-
piece
The finished work-
piece is located...
Checking and Adjusting the Basic Adjustment
To ensure precise cuts, the basic adjustment of the machine
must be checked and adjusted as necessary after intensive
use.
A certain level of experience and appropriate specialty tools
are required for this.
A Bosch after-sales service station will handle this mainte-
nance task quickly and reliably.
Adjusting the Laser
Note: To test the laser function, the machine must be con-
nected to power.
While adjusting the laser (e.g. when moving the glide
arm), never actuate the On/Off switch. Accidental start-
ing of the power tool can lead to injuries.
– Bring the power tool into the working position.
– Turn the saw table 38 to the 0° detent 18. The lever 16
must be felt to engage in the detent.
– Switch on the laser beams with switch 61.
Checking: (see figure T1)
– Draw a straight cutting line on the workpiece.
– Press locking lever 5 and slowly guide the glide arm down-
ward with handle 4.
– Align the workpiece in such a manner that the teeth of the
saw blade are in alignment with the cutting line.
– Hold the workpiece in this position and slowly guide the
glide arm upward.
1 609 929 Y62 | (9.5.11)
Placed
against the
fence
52°
Left side Right side
45° right 45° left
0° 0°
Bottom edge Bottom edge
against the fence against the fence
... to the right of the ... to the left of the
cut cut
45° left 45° right
0° 0°
Bottom edge Bottom edge
against the fence against the fence
... to the right of the ... to the left of the
cut cut
– Clamp the workpiece.
– Switch on the laser beams with switch 61.
Throughout the complete length, the laser beams must have
the same clearance to the drawn cutting line on the work-
piece, even when lowering the glide arm.
Adjusting the Flush Levelling: (see figure T2)
– Using the Allen key (2 mm) 21, turn the respective adjust-
ment screw 64 until the laser beam has the same clearance
to the drawn cutting line on the workpiece over the com-
plete length.
One rotation in anticlockwise direction moves the laser beam
from left to right; one rotation in clockwise direction moves
the laser beam from right to left.
Adjusting the Parallelism: (see figure T3)
– Loosen the two screws 65 of laser protection cap 27 with
the Allen key (4 mm) 20.
Note: To access the front screw of the laser protection
cap, the glide arm must be tilted down a little until the Allen
key can be inserted through one of the slots of the retract-
ing blade guard.
– Loosen fastening screw 66 (approx. 1–2 turns) with the
Allen key (2 mm) 21.
Do not completely unscrew the screw.
– Move the mounting plate of the laser right or left until the
laser beams are parallel to the drawn cutting line on the
workpiece over the complete length.
Lying flat on
the saw table
Left side Right side
31.6° right 31.6° left
33.9° left 33.9° right
Upper edge against Upper edge against
the fence the fence
... to the left of the ... to the right of the
cut cut
31.6° left 31.6° right
33.9° right 33.9° left
Upper edge against Upper edge against
the fence the fence
... to the left of the ... to the right of the
cut cut
Bosch Power Tools