Lumberjack TTA-MULTI User manual

USER MANUAL
Industrial Series (60° Shoulder Profile)
Multi-Tool
MODEL:
Industrial Series TTA-MULTI
Lumberjack Tools Inc.
PO Box 730
Chippewa Falls, WI 54729
www.lumberjacktools.com
Email: [email protected]
Phone: [phone]
Rev: 1/17

2
About Your Product
Thank you for purchasing our Dual Blade – Industrial Series Tenon Cutter!
Lumberjack engineers, along with our craftsmen, have designed the
safest, easiest-to-use tenon cutters on the market. By combining old world
skills with 3D CAD modeling and CNC manufacturing, we have created the
ideal tenon cutter: straight tenons, smooth finish, precision operation, and
long life.
Our Multi-Tool is a revolution in tenon-cutter design, allowing the user to
cut six different tenon sizes with a single tool. The tool body is precision
CNC machined out of a solid billet of aircraft-grade aluminum to ensure du-
rability and long-life. Two heat-treated blades, versus the traditional single
blade, distribute the cutting force evenly across razor-sharp, precision
ground edges. Beveled aluminum quick-release inserts keep the tenon
straight, and are quickly and easily changed.
Our lifetime guarantee covers the tool body, aluminum inserts, and shank.
The blades are covered for 90 days from the date of purchase for
breakage under normal working conditions. Blades will dull faster cutting
hardwoods vs. softwoods (peeled or unpeeled). Soil and other abrasive
substances will reduce blade life, and contact with these substances is not
covered under this warranty. When making a claim, you must show proof
of purchase from an authorized distributor. This warranty is valid only to
the original buyer, and not valid for tools sold secondhand, used, or sold
“as-is”
What Voids Warranty
In order to keep our lifetime and 90 day warranty you must AVOID the
following actions:
●Operating the tool in a drill press or lathe (or any system other than
a hand-held drill)
●Running the tool into a nail or foreign object
●Altering or misusing the tool

3
SAFETY
Before beginning any project, carefully read and follow ALL safety and
operational instructions for any tools or devices you will be using. Failure to do
so may cause physical harm to yourself or those around you. If you feel
uncomfortable using our tenon cutters or any other tool, STOP immediately.
Lumberjack Tools assumes no responsibility for injury caused to the operator,
bystander, or tools used in conjunction with the use or misuse of our tenon
cutters.
NEVER OPERATE POWER TOOLS UNDER THE INFLUENCE OF
DRUGS, ALCOHOL, OR ANY MEDICATIONS
ALWAYS WEAR SAFETY GLASSES, DUST MASK, AND ANY OTHER
PERSONAL PROTECTION ITEMS AS NEEDED
NEVER WEAR LOOSE ITEMS THAT COULD BE CAUGHT IN MOVING
PARTS. SECURE LOOSE OR LONG HAIR AWAY FROM AREA
WE STRONGLY RECOMMEND A SINGLE-SPEED, GEAR DRIVEN
DRILL WITH RPMS OF 500 OR LESS. EXCEEDING THESE RPMS MAY
RESULT IN DAMAGE TO THE TOOL
ALWAYS DISCONNECT POWER AND ALLOW DRILL TO COME TO A
COMPLETE STOP BEFORE INSTALLING, REMOVING, OR ADJUSTING
THE TOOL
NEVER APPLY BENDING FORCE (SIDE LOADING) THE TOOL. SIDE
LOADING COULD CAUSE THE SHANK TO FAIL, OR MAY RESULT IN
BLADE DAMAGE
ALWAYS SECURE THE LOG IN A VISE OR CLAMP PRIOR TO
STARTING YOUR DRILL. FAILURE TO DO SO MAY RESULT IN INJURY
ALWAYS HANDLE THE BLADES WITH EXTREME CARE! FAILURE TO
DO SO MAY RESULT IN SERIOUS INJURY
WHEN EXCESSIVE FORCE IS REQUIRED TO CUT, RE-SHARPEN OR
REPLACE THE BLADES. A SHARP TOOL IS A SAFE TOOL!
NEVER PUT HANDS OR ANY BODY PART INSIDE THE TOOL WHILE THE
BLADES ARE ATTACHED! DOING SO MAY CAUSE SERIOUS INJURY

Ø3/4” Spacer (Qty. 1)* Ø1” Spacer (Qty. 1)*
Ø1-⁄” Spacer (Qty. 1)*
Ø1-⁄” Spacer (Qty. 1)*
Ø1-⁄” Spacer (Qty. 1)*
Plan Booklet (Qty. 1)
Quick Stop Pin
(Qty. 3)
Hex Wrench
(Qty. 1)
TB2500
Blades (Qty. 2)
Tenon Cutter (Qty. 1)
4
What’s Included
www.lumberjacktools.com
1. DRILL 2. CUT 3. ASSEMBLE
20 Log Furniture Plans
*Some spacers not included with certain models
Button Head Cap
Screw (Qty. 4)
Thumb
Screw
(Qty. 2)

Tool Prep
IMPORTANT: add the insert BEFORE installing the blades.
●Begin by installing the two
thumbscrews in the tool body (near
the shank end)
3
●Select the correct size insert based on
the desired tenon size
NOTE: No insert is required to cut a
2” Tenon
●Slide the insert into the tool body so
that the thumbscrews fit into the
insert “L” channels
●Turn the insert clockwise to lock in
place
5
WARNING: NEVER PUT HANDS OR ANY BODY PART INSIDE
THE TOOL WHILE THE BLADES ARE ATTACHED! DOING SO
MAY CAUSE SERIOUS INJURY
2
1

The Industrial Series Multi-Tool has six
possible settings that range from ¾” to
2” by ¼” increments. The blades must be
moved to cut a different tenon size.
6
Setting the Blades
Tenon
Size
Max Log
Dia.
Approximate
Blade Offset
0.75” 3.25” .090”
1.00” 3.50” .110”
1.25” 3.75” .130”
1.50” 4.00” .150”
1.75” 4.25” .170”
2.00” 4.50” .190”
Blade Offset
Correct (smaller tenon) Correct (larger tenon) WRONG
The tenon diameter is variable based on the blade offset. Smaller offset
= smaller tenon, larger offset = larger tenon. Approximate blade offset
(in the table above) is a good place to start, but you will want to test
tenon fit in holes to achieve the correct offset (we recommend writing
the results down). DO NOT set the blades beyond 5/16” or the blade
edge will not contact the log and will not cut.
1/8” 1/4”
●Install and secure the blades with
the Button Head Cap Screws
●Take care to keep the blade offset
of both blades equal (see below)
●
The top number that is
visible will always be the
size of the tenon cut

Quick Stop Installation
7
●Install the quick stop pin through
the tool body and insert
●Secure with the supplied acorn nut
●The length of the tenon is
determined by measuring from
the top of the blade to the bottom
of the Quick Stop Pin
●In the image to the left, dimension
“X” represents the length of the
tenon
X
1
2

8
WARNING: If the log comes loose or unclamped while cutting the tenon,
DO NOT drop the drill or try to grab the log! Stop the drill and remove it
from the end of the log. Re-secure the log, and resume cutting
●Obtain the log you want to tenon.
●Cut it to length and make sure the ends
are flat. If the ends are not even/flat, the
tenon will be crooked
●If the log diameter is
larger than the tool can
accept, taper the end
with a draw knife
●Secure the log in a vise, clamp,
or fixture with a “V” shaped
notch
●The Log Lock (LL1545) is a safe,
easy, economical way to clamp
logs, and is available on our
website
Cutting Tenons
1
2
3

9
ALWAYS unplug the drill before adjusting the blades or
adjusting the chuck
CORRECT
Tool is in-line with log
●Make sure the tool is square against the end of the log
before cutting
●If the tool is held at an angle the tenon will be cut angled
Cutting Tenons (cont.)
WRONG
Tool is at an angle
4
●Carefully install the tenon
cutter into an unplugged 1/2”
drill, and tighten it firmly. Use
the tee handle to tighten the
chuck
●Square up to the log so that
the cutter is flush against the
flat face of the log
●Apply body pressure by leaning
into the drill
●Pull the trigger to cut the tenon
●Wait until the drill comes to a
stop before removing the
cutter from the log
4.5

10
Drilling Holes (Mortise)
●Measure and mark the locations of all
holes before drilling
●Place the center of the bit on the
desired hole location
●Take care to hold the drill perpendicular
to the log
●Use a forstner bit (or spade bit) to drill
the hole
1
2
●Drill mortise between
1/3 and 1/2 of the log
diameter
●Do not drill more than
1/2 of the log
diameter unless a
specific project calls
for a deeper mortise

11
Maintenance
-Body
●Cleaning
○Keep the tenon cutter body clear of sap and other build-up
○Always remove the blades before cleaning
○Clean the tool with a solvent (such as mineral spirits)
-Blades
●Care
○Always wipe blades with a thin film of oil at the end of the day to
help prevent oxidation
●Cleaning
○Clean the blades with a solvent (such as mineral spirits) and
immediately apply a thin film of oil to prevent oxidation
●Sharpening
○Use a sharpening stone or file to re-sharpen the blades, then
clean the blades and apply a thin film of oil
-Shank
●Replacement
○If your shank breaks, we offer replacement shanks (see first page
for contact information)
○Turn the shank counter-clockwise to remove
○Turn the shank clockwise to install
WARNING: ALWAYS HANDLE THE BLADES WITH EXTREME CARE!
FAILURE TO DO SO MAY RESULT IN SERIOUS INJURY

Additional Tips
As with any new hobby, it will take time to master using our tools, and
building log furniture. It is best to have a plan or a sketch of what you want
to build, along with a list of tools and materials required. Try a simple
project first to familiarize yourself with the tools and the process, and work
your way up to more advanced designs.
We recommend gathering some scrap material to practice using the tools
and creating tenons before starting your first project.
Thank you again for purchasing our tools!
PO Box 730 • Chippewa Falls, WI 54729 • 715.720.4719 • www.lumberjacktools.com
PROBLEM CAUSE SOLUTION
• Tool Skips off
to one side or
bounces around
• Log is larger than tool will
accept
• Taper down the end of the
log with a draw knife
• Not enough pressure is being
applied • Lean into drill with body
• Not cutting log
• Log is larger than tool will
accept
• Taper down the end of the
log with a draw knife
• Blades are slid too far back • Position blades so they are
back no further than 5/16"
• Blades are dull
• Not applying enough
pressure
• Sharpen blades
• Purchase new blades
• Lean into drill with body
• Takes too
much of a "bite"
• Aggressive cutting from dual
blades
• Remove one blade or
"shim" blade up to .020”
• Crooked Joint • Holding drill crooked while
cutting
• Position the drill square
against the log before cutting
• Drill stops or
cuts on small
diameter logs
but not larger
ones
• Using a variable speed drill
• Make sure you are using a
single-speed drill with low
RPMs
• Using a non-Milwaukee
brand drill
• We recommend purchasing
a Milwaukee brand hole hog
drill
• Spiral grooves
on the tenon
joint
• Lateral wobbling of the drill • Hold the drill as steady as
you can while cutting
• Removing the cutter while
drill is still spinning
• DO NOT remove the cutter
until the drill has come to a
complete stop
Troubleshooting