Craftsman 486.242112 User manual

Made in the USA
INDUSTRIAL SERIES (60° Shoulder Profile)
Dual Blade Tenon Cutters
Lumberjack Tools Inc.
PO Box 730
Chippewa Falls, WI 54729
Phone: 715-720-4719
Rev: 02/14
Industrial Series TTA0750
Industrial Series TTA1000
Industrial Series TTA1500
Industrial Series TTA2000
Industrial Series TTA2500
Industrial Series TTA2563
Industrial Series TTA3000
Industrial Series - L Models
About Your Product
Thank you for purchasing our Dual Blade - Industrial Series Tenon Cutter!
Lumberjack engineers, along with our craftsmen, have designed the
safest, most easy-to-use tenon cutters on the market. By combining oldworld skills, along with DFMA principles and CNC technology, we’ve
eliminated the issues of off-center tenons and side-load cutting
associated with single-blade designs.
We’ve added value with the dual-blade technology, which will cut the
tenon in half the time. Having two blades, allows them to stay sharper,
longer. The blades are stamped, heat treated and precision ground to
provide years of service when properly maintained.
Our solid billet of aircraft-grade aluminum is designed to last a lifetime
under normal operating conditions. The aluminum body is CNC machined
to ensure precise cutting each and every time.
Our unique In-Sight Measurement System allows the craftsman to cut
the tenon to their desired length without the process of measuring by
hand, to ensure accurate and consistent tenon lengths.
Our lifetime guarantee covers the tool body and shank. The blades are
covered for 90 days from the date of purchase for breakage under
normal working conditions. Blade sharpness is based on the type of
wood (peeled or unpeeled). Grit, dirt, etc., will impact how long your
blades stay sharp, and is not covered under this warranty. When making
a claim, you must show proof of purchase from an authorized
distributor. This is valid only to the original buyer, and not for tools sold
secondhand, used, or sold “as is” to a second party.
Before beginning any project, carefully read and follow all safety and
operational instructions for any tools or devices you will be using. Failure to
follow ALL safety instructions may cause physical harm to yourself or those
around you. If you feel uncomfortable using our tenon cutter or any other tools,
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 this tool under the influence of alcohol, drugs or
You must wear safety glasses, a dust mask, and any other personal
safety accessories you deem necessary.
Before installing/removing the tool, the drill must come to a complete
stop and the power must be disconnected.
Do not wear gloves, loose clothing or other items that may get caught
in the moving parts.
Never operate this tool in a drill press, lathe or any other device except
for a ½” drill. Doing so voids the warranty.
We recommend a single‐speed drill with RPMs of 500 or less. It should
be a gear‐driven drill and not a variable‐speed drill.
Overloading or exceeding the RPM’s can result in annealing the blade
or shank failure.
The log must be secured in a vise or clamp prior to starting your drill.
Failure to do so may result in bodily harm.
Do not run the tool into a nail or foreign object. Doing so may ruin the
blades or tool, and voids the warranty.
Do not alter or misuse this tool in any fashion.
Remember the blades are sharp. Use caution when handling.
Do not apply side force on the drill while in operation or it could result
in premature shank failure or blade damage.
This tool must be maintained by keeping the blades sharp and clean of
When excessive force is required to cut, re‐sharpen or replace the
blades. A sharp tool is a safe tool!
Under sever working conditions, while cutting tough, dry or knotty
logs, side loading the tool may cause the shank to fail, or may result in
blade damage.
Assembly Parts Included:
2 - Blades
4 - Cap Screws
Allen Wrench
Blade Assembly/Setting
1. Insert the allen wrench (included) into the cap screw and tighten
the screw
2. Make sure the blade gap setting is the same distance apart for
both blades (about 1/8” - 1/4”) See below
3. You can slightly change the tenon diameter by sliding the blade in
or out. Sliding it in will reduce the diameter, and sliding it back
will increase the diameter. DO NOT slide it beyond 1/4” from the
face of the cutout. Doing so will not cut a tenon, as the blade
must be exposed
4. If the bit is too aggressive or stops your drill while cutting, you can
remove one blade from the tool and operate it with one blade
Securely tighten the cap screw, but take caution not to strip it (do not
over tighten). Re-check both screws before starting.
Using the In-Sight Measurement System
4 - In-Sight
slots every 90°
for ease of use
Rings every 1/2”
1-1/2” long tenon
to the first radial
measurement ring.
TTA1000, TTA1500,
TTA2000, TTA2500,
TTA2563, TTA3000
Quick Stop Pins
Included in the following kits: ISK2, ISK2N, ISK3, ISK3N, ISK5, ISK5N
(Also available for individual purchase)
View of the pin
inside the mouth of
the tenon
The Quick Stop Pins
stop the log at the
desired length.
Getting Started
WARNING: Securing the log is probably the most IMPORTANT safety
factor that will arise while building log furniture.
● Obtain the log you want to tenon. Cut it to length and make sure the
end is flat. If the end is not even/flat, the tenon will be crooked
● Secure the log in a vise, or clamp it to a table in a V-shaped notch
● Carefully install the tenon cutter into an unplugged 1/2” or 3/4” drill,
and tighten it firmly. A T-handle is also recommended
● Anytime you adjust the blades, or retighten the chuck, you must
ALWAYS unplug the drill
Tips for Making Log Tenon Joints
Tip 1: Drilling Components
· Cut components to lengths
· Drill holes (mortise) in components
using a forstner or spade bit at
locations dimensioned on the plan
· Drill depth for mortise equals
one‐third to one‐half diameter unless
otherwise specified
· Hold drill perpendicular and straight
to the log
Tip 2: Prepping Tenon
· Measure depth of mating mortise
hole, then subtract 1/4”
· If the log is larger than the cutter
will accept, taper down the end
using the draw knife
Tip 3: Cutting Tenon
· Cutting a straight tenon is very important to minimize assembly issues
(see below)
Proper cutting technique:
Log and drill “on-center”
Result - Straight Tenon
Improper cutting technique:
Log and drill “off-center”
Result - Crooked Tenon
Cutting Tenons
● If the log diameter is greater than what the tool will accept, use a
draw knife to taper the end of the log, as one would sharpen a pencil,
to get the tool started
● With your log securely clamped, position the tenon cutter face,
squarely against the log you’re going to tenon
● Do NOT depress the trigger or start the drill before positioning it
against the log. Doing so could harm yourself or the tool
● While holding the drill squarely against the log, apply body pressure
(straight in-line) with the drill and depress the trigger
qNOTE: Apply quite a bit of force. Lean into the drill so that it does
not jump around or skip off the log
● You should not be cutting your tenon to the desired length
● Once the cutting has begun, you may ease up on the pressure, and
the dual-blade technology will assist you in “pulling” the tool into the
● WARNING: If the log comes loose or unclamped while making the
tenon, DO NOT drop the drill or try to grab the log. Hang on the drill
and point it in a safe direction (usually towards the ground), away
from everyone until it comes to a complete stop
● Do not remove the tool from the log until the drill comes to a
complete stop. Failure to do so will waffle cut the tenon or cause
harm to the operator. Do not place hands or body parts near the tool
or blades while in operation
● Do not drop or allow the tool to fall to the floor by itself or while in
the drill. Doing so may bend the shank or damage the tool. This
damage is not covered by the warranty
It is best if you keep the tenon cutter body clean of sap and build up.
Remove the blades from the tool first. Carefully clean the tool with the
solvent or cleaner of your choice, and dry when completed.
The blades are made from high-quality tool steel, and may form
oxidation. This is a natural occurrence and will vary depending on your
geographic location, climate and shop environment. You should
periodically clean the blades and apply a thin film or oil.
Re-sharpening the blades: Wear safety glasses, and use caution when
sharpening the blades. Every time you re-sharpen the blades, you must
apply a thin film of oil. Use extreme caution so not to cut yourself.
We recommend our Blade Boss Jig (BB2500) for sharpening the blades.
(BB2500 Not Included)
Shank: One of the unique features about our tenon cutters is that they
offer a replaceable shank. In the rare instance that your shank breaks, we
offer replacement shanks for sale so you don’t have to replace the entire
tenon cutter. The shanks are threaded, so to loosen them, turn the shank
to the left
● Log is larger than what the tool will accept
● Not enough body pressure is being applied
● Drill running prior to positioning the log. You must have the drill
positioned against the log, apply body pressure, then start the drill
● Blades are slid back too far - not grabbing
● Not applying enough body pressure
● Blades are dull
● Remove one blade or “shim” up no more than .020”
● This is caused by using a variable speed drill
● Too high of RPM
● This may also be caused by using a non-Milwaukee brand drill
qDeWalt, Makita, Rigid, Etc have less torque than Milwaukee
● This is from holding the drill crooked to the log
● This is caused by wobbling the drill side to side while cutting
● Removing the cutter from the log while the drill is still spinning
Additional Tips
As with any new hobby or project, it will take time to master using our
tools, and building furniture. You must first have a plan or a sketch of
what you want to build, along with a tools and materials list before you
Another important issue is reading the natural twist, stress or other
deformities in the logs and using these skills to your advantage, allowing
your pieces to become more unique as your abilities grow. It is also
important is to not over complicate your first few pieces, so you can have
a “positive” experience.
Before starting your first project, use some scrap material and “practice”
cutting tenons and using tools. Make sure you are comfortable operating
the drill and cutters before you begin the project.
Thank you again for purchasing our tools!
PO Box 730 • Chippewa Falls, WI 54729• 715-720-4719 •