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B975 User Guide
Chapter 4
Mounting & Assembly
21
4-16
Use a table saw, router table or
jointer to skim off the top surface of
the 2x4. Now go back to step 4-7 for
the rest of the beam preparation.
4-18
Prepare the Beam
To prevent tearout of the beam,
grooves must be routed in all
template openings, on both sides of
the beam, as shown in the following
steps.
Preparing the beam is particularly
important when using a common
2x4 because its side grain will tear
out badly.
4-17
Install the Bit
Install the No.160 1/2" straight bit
(or equivalent) in the router. The bit
goes through the guide bushing and
fits in the router collet.
Tighten the collet and rotate the bit
and collet to ensure it spins freely
and does not contact the eBush or
eBush nut.