Page 27 - Router Boss Manual

Set up the rails Insert the wing locking pins in the correct angle holes.
We used an 8-degree, 7/16” diameter bit. Once Align router plate firmly against the front half of the left
you know the angle of your dovetail bit, you can set the guide and the back half of the
right guide, then loosely
adjustable guide rails. Loosen the binding bolt at the tighten the binding bolts on
center of each wing assembly, remove the positioning the adjustable wings.
pins and turn the wings to the desired angle, then rein-
stall the positioning pins.

Next, loosen the binding bolts, set the router on
the base plate and slide it between the adjustable guide
rails, twisting it so it fits firmly against the front half
of the left rail and the back half of the right rail (as
shown). Loosely tighten the binding bolts to keep the
wings in place, but don’t over-tighten them.

With the angle set, you’ll also need to locate the
guide rails in the proper position on the base plate to
make the pins the same width as the sockets. In the ta-
ble below, find the dovetail bit that matches your dove-
tail bit’s angle and width, then select the setting that
matches the diameter of the straight bit you’ll use. This
is a trial setting that we’ll validate by cutting a test pin.

Our dovetail bit was 8° - 7/16” and we plan to use
a 3/8” straight bit to make the cuts, so the setting we
want is 73.5. Slide the guide rail bases, one at a time,
so the cursor on the fixed straight edge of the guide rail
is set to 73.5 on the base plate rule. Also make sure the
fixed edge of the left guide rail base stays aligned with
the left edge of the base plate and the fixed edge of right
guide rail stays aligned with your pencil line. (For more
settings, go to www.chipsfly.com/cutters/settings.html).

Straight Bit Diameter
Dovetail Bit Angle - Width 1/4” 5/16” 3/8” 7/16” 1/2”
8° - 3/16” (.188) 39.5 45 51 56.5 62
8° - 1/4” (.250) 45 51 56.5 62 68

8° - 5/16” (.313) 51 56.5 62 68 73.5
8° - 3/8” (.375) 56.5 62 68 73.5 79
8° - 7/16” (.438) 62 68 73.5 79 84.5
8° - 1/2” (.500) 68 73.5 79 84.5 90.5
8° - 11/16” (.688) 84.5 90.5 96 101.5 107.5
8° - 13/16” (.813) 96 101.5 107.5 113 118.5
10° - 9/16” (.563) 58.5 63 67.5 72 76.5
10° - 11/16” (.688) 67.5 72 76.5 81 85.5
10° - 3/4” (.750) 72 76.5 81 85.5 90
10° - 13/16” (.813) 76.5 81 85.5 90 94.5
10° - 15/16” (.938) 85.5 90 94.5 99 103.5
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