Made in the USA USER MANUAL INDUSTRIAL SERIES (60° Shoulder Profile) Dual Blade Tenon Cutters Lumberjack Tools Inc. PO Box 730 Chippewa Falls, WI 54729 www.lumberjacktools.com Email: info@lumberjacktools.
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.
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 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.
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.
Using the In-Sight Measurement System 4 - In-Sight Measurement slots every 90° for ease of use Radial Measurement Rings every 1/2” 1-1/2” long tenon to the first radial measurement ring. MODELS: TTA0750, 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.
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
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 RIGHT WRONG ● Do NOT depress the trigger or start the drill before positioning it against the log.
● 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 Maintenance It is best if you keep the tenon cutter body clean of sap and build up.
Troubleshooting TOOL SKIPS OFF TO ONE SIDE OR BOUNCES AROUND ● 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 NOT CUTTING ● Blades are slid back too far - not grabbing ● Not applying enough body pressure ● Blades are dull TAKES TOO MUCH OF A “BITE” ● Remove one blade or “shim” up no more than .
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 begin. 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.
PO Box 730 • Chippewa Falls, WI 54729• 715-720-4719 • www.lumberjacktools.
