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CENTERING THE SUB-BASE AND
TEMPLET GUIDES
Your router features the Bosch “Precision
Centering Design”. Its sub-base is precisely
centered at the factory. This positions the bit at
the center of the sub-base and optional templet
guides. Precision centering allows you to closely
follow jigs such as straight guides, templets, and
dovetail fixtures without worrying about bit walk-
off from the intended cut line for any reason,
including the orientation of the router’s handles.
In the event the sub-base screws are loosened
or removed, such when preparing the router for
use in a router table, here's how to re-center the
sub-base when reattaching it:
To quickly re-center the sub-base, attach the
sub-base using the set of flathead screws
(included) and the countersunk screw holes in
the sub-base. (Flathead screws have the tapered
heads.) The flathead screws and countersunk
holes will pull the sub-base into a position that is
very close to centered.
OR — To most precisely re-center the sub-base,
attach the sub-base using the optional Bosch
centering cone, an optional Bosch templet
guide, and the set of pan-head screws
(included). (Pan-head screws have rounded
tops.) Follow steps 1-8.
1. Position the sub-base so that its pan-head
screw holes are over the matching set of
threaded holes in the base.
2. Insert the pan-head screws, not the flathead
screws, through the sub-base and tighten
them until they are snug, but still allow the
sub-base to move.
3. Insert templet guide (optional accessory) the
installed template guide adapter as described
elsewhere in this manual.
4. Slide centering cone (optional accessory)
through templet guide and into collet. Use
narrow end of cone when inserting into 1/4”
collet, wider end of cone when inserting into
1/2” collet.
5. Tighten collet nut with fingers to put slight grip
on centering cone.
6. Lightly press centering cone into templet
guide to center guide and sub-base.
7. Tighten the pan-head screws.
8. Remove centering cone. The precision
centering of the templet guide and sub-base
is complete.
-15-
GUIDING THE ROUTER
The router can be guided through the work in
any of several ways. The method you use
depends, of course, on the demands of the
particular job and on convenience.
For routing operations such as grooving or
dadoing, it is often necessary to guide the tool
in a line parallel to a straight edge. One
method of obtaining a straight cut is to securely
clamp a board or other straightedge to the
work surface, and guide the edge of the router
sub-base along this path (Fig. 18).
FIG. 18
BOARD GUIDE
SECURELY CLAMP
BOARD GUIDE
FEED
DIRECTION
FIG. 17
CENTERING CONE
(optional accessory)
SUB-BASE
D
DD
B
B
B
B
CC
D
AA
AA
1
A = COUNTERSUNK SCREW HOLES
B = PAN-HEAD SCREW HOLES
C = TEMPLET GUIDE ADAPTER
SCREW HOLES
D = HOLES FOR ATTACHING
ROUTER TO ROUTER TABLE
MOUNTING PLATE
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