Bosch GOF 900 CE Professional - Manual (Page 19)

English | 19
Bosch Power Tools 1 619 929 J79 | (23.11.11)
setting range of 2.0 mm; a graduation mark on the top edge of
the scale 19 corresponds with a 0.1 mm change of the setting
range. The maximum setting range is ± 8 mm.
Example: The desired depth-of-cut is to be 10.0 mm; the trial
cut resulted in a cutting depth of 9.6 mm.
– Lift up the router and place e. g. a piece of scrap wood un-
der the guide plate 9 so that the router bit 7 cannot touch
the workpiece when lowering it. Push the release lever 22
down and slowly lower the plunge router until the depth
stop 15 faces on the step buffer 10.
– Turn the scale 19 to “0” and loosen wing bolt 14.
– Turn the adjustment knob 20 by 0.4 mm/4 graduation
marks (difference from set to actual value) in clockwise di-
rection and tighten the wing bolt 14.
– Check the selected depth-of-cut by carrying out another
trial cut.
After adjusting the depth-of-cut, do not change the position of
the slide 16 on the depth stop 15 any more, so that the actual
cutting depth can be read on the scale 18.
Working Advice
f Protect router bits against shock and impact.
Direction of Feed and Routing Process (see figure E)
f
The routing process must always be carried out against
the rotation direction of the router bit 7 (up-cutting
motion). When routing in the direction with the rota-
tion of the router (down-cutting), the machine can
break loose, eliminating control by the user.
– Adjust the required depth-of-cut; see Section “Adjusting
the Depth-of-cut”.
– Place the machine with the router bit mounted on the
workpiece to be machined and switch the power tool on.
– Push the release lever 22 down and slowly lower the
plunge router until the adjusted depth-of-cut is reached.
Let go of the release lever 22 again to lock this cutting
depth.
– Carry out the routing process applying uniform feed.
– After finishing the cutting process, guide the plunge router
upward again to the uppermost position.
– Switch the power tool off.
Routing with Auxiliary Guide (see figure F)
For working large workpieces, e. g. when routing grooves, a
board or wood strip can be fastened to the workpiece as an
auxiliary guide alongside which the router can be guided.
Guide the router with the flattened side of the guide plate
along the auxiliary guide.
Shaping or Molding Applications
For shaping or molding applications without the use of a par-
allel guide, the router bit must be equipped with a pilot or a
ball bearing.
– Guide the switched on power tool from the side toward the
workpiece until the pilot or the ball bearing of the router bit
faces against the workpiece edge to be machined.
– Guide the power tool alongside the workpiece edge with
both hands, paying attention that the router is positioned
rectangular. Too much pressure can damage the edge of
the workpiece.
Routing with Parallel Guide (see figure G)
Slide the parallel guide 29 with the guide rods 30 into the
base plate 12 and tighten as required with the wing bolts 5.
Additionally, the parallel guide can be adjusted lengthwise
with the wing bolts 31 and 32.
Fine adjustment of the length is possible with the fine-adjust-
ment knob 33 after loosening both wing bolts 31. One revolu-
tion corresponds with a setting range of 2.0 mm. One gradu-
ation mark on the fine-adjustment knob 33 changes the
setting range by 0.1 mm.
The effective contact surface of the parallel guide can be ad-
justed with the edge guide 34.
Guide the switched on power tool with uniform feed and later-
al pressure on the parallel guide alongside the workpiece
edge.
When routing with the parallel guide 29, the dust/chip extrac-
tion should take place via the special extraction adapter for
the parallel guide 35. The extraction adapter 27 can remain
mounted.
Routing with the Router Compass (see figure H)
The router compass/guide-rail adapter 36 can be used for cir-
cular routing jobs. Mount the router compass as shown in the
figure.
Screw the centring screw 41 into the thread on the router
compass. Insert the point of the centring screw into the cen-
tre of the circular arc to be routed, paying attention that point
of the screw engages into the workpiece surface.
Coarsely adjust the required radius by moving the router com-
pass and tighten the wing bolts 38 and 39.
The length can be fine adjusted with the fine-adjustment knob
40 after loosening the wing bolt 39. One revolution corre-
sponds with a setting range of 2.0 mm. One graduation mark
on the fine-adjustment knob 40 changes the setting range by
0.1 mm.
Guide the switched on power tool over the workpiece with the
right handle 1 and the router compass handle 37.
Routing with Guide Rail (see figure I)
Straight routing cuts can be carried out with help of the guide
rail 43.
The base spacer 42 must be mounted in order to compensate
the height difference.
Mount the router compass/guide-rail adapter 36 as shown in
the figure.
Fasten the guide rail 43 to the workpiece with suitable clamp-
ing devices, e. g. screw clamps. Place the machine with the
guide-rail adapter 36 mounted onto the guide rail.
Routing with Guide Bushing (see figures K–N)
The guide bushing 47 enables template and pattern routing
on workpieces.
In order to use the guide bushing 47, the guide bushing adapt-
er 44 must be inserted into the guide plate 9 first.
Place the guide bushing adapter 44 from above onto the
guide plate 9 and tighten it firmly with the 2 fastening screws
45. Pay attention that the release lever for the guide bushing
adapter 46 is freely movable.
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