ADJUSTABLE FINGER CUTTING BIT
•Failure to follow theSE guide-
lines will result in serious per-
sonal injury.
•ALWAYS WEAR ANSI
APPROVED EYE AND EAR
PROTECTION when using this
cutter.
•These cutter should only be
used with a shaper machine,
never with a handheld router.
•Never feed lumber with the
rotation of the cutter.
•Follow the safety guidelines
set forth by the manufacturer
of the Router.
INSTRUCTIONS FOR C1682
These router bits have sharp
edges. Use care while remov-
ing the waxy protective coat-
ing. Never turn on the router
with the protective coating
still on the bit.
Designed for convenient adjustment to create matching finger joints in stock thicknesses between 7⁄16" and 13⁄8",
the Model C1682 Adjustable Finger Joint Bit features six cutting fingers and matching spacers that can be added
or removed to best suit your needs.
Note: These instructions and drawings are intended for explanation and clarification purposes only as they relate
to this particular router bit. Apply all safety rules and measures pertaining to router operations and your specific
operation. Refer to the owner’s manual supplied with your router and router table for specific warnings and
instructions before proceeding with equipment operations.
• Unplug router before install-
ing or adjusting cutter.
• Keep all guards and anti-kick-
back devices in place.
• Double check bit to insure
nut is tight and bit is tight and
secure in router.
• Always inspect lumber and
other wood materials for
cracks, knots, or other imper-
fections that could cause lum-
ber to kick or shatter while
milling.
Step 1 – Stacking Finger Cutters
The Model C1682 features five double-beveled finger cutters and an edge
cutter.
To adjust the router bit to suit your needs, remove the base nut and washer.
Remove the end cutter and any fingers and spacers that aren’t needed.
Replace the end cutter (see below) and stack the leftover spacers between
the end cutter and space for the end nut. Be careful to orient the fingers
and end cutter in the direction that the router turns! Attach the washer and
end nut. Tighten.
526003622
Stock Range
13⁄16" - 13⁄8"
Five Fingers
Stock Range
1" - 13⁄16"
Stock Range
13
⁄16" - 1"
Four Fingers Three Fingers
Stock Range
5
⁄8" - 13⁄16"
Stock Range
7
⁄16" - 5⁄8"
Two Fingers One Finger
© JUNE 2004 Grizzly Industrial, Inc.
Step 2 – Making Your Cut
The Model C1682 Adjustable Finger Cutting Bit is one of the few tools available that does what many
consider to be the unthinkable in woodworking – creating end-to-end joints. Despite its size and cutting
area, the Model C1682 is capable of being used in a hand-held router, as well as in a router table. We
1
recommend, though, that the router used be rated at a minimum of 1
⁄2 horsepower and that a router
table be used.
Once you have determined the thickness of the wood you choose to join – and have set up the router
bit to match that thickness (as described on the previous page), the remainder of the process is quite
simple. Set your router’s baseplate so the router bit’s guide bearing rides securely on the top edge of
1
your cut (approximately
⁄8" to 3⁄16" below the top edge of your stock material). For flush joints, the Finger
Cutting Bit must be perfectly centered so the same amount of material is removed at the top and bottom
of the material being milled. (“A” must equal “B”, as shown in the illustration below.)
Once your router and bit are properly aligned to the stock you are milling, turn on the router and make
your cut. Thicker materials may require multiple passes for best results.
“A”
“B”
Step 3 – Matching Your Joints
The primary purpose of the Model DC1682 router bit is to create extended lengths of paint-grade lumber
by allowing the user to match and connect shorter lengths end-to-end. If handled carefully, clean, goodlooking joints can be made, that will stand up well to inspection.
To match butt ends, inspect and pair end butts with care. It is unlikely that you will be able to match
grains exactly, but a close match of color and grain width can be quite attractive.
Once you have paired your butt ends, make your first joint cut. To make the matching cut on your sec
ond piece of lumber, turn it over and make your cut from the bottom side. When you have completed
your second cut, turn the second board back over (as shown in the illustration above) and check your
materials for a proper fit. It is essential that the router height adjustment is locked securely – any varia
tion between cuts will result in a mis-matched joint.
A well-matched and carefully glued finger joint is not only attractive, it actually provides a surface that
is stronger than a single length of lumber. Take time to practice these joints on scrap materials before
attempting serious projects. That time will be well spent.
-
-
526003622
© JUNE 2004 Grizzly Industrial, Inc.
Loading...