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Double End Tenoner
The Mereen-Johnson Double End Tenoner is a two sided tenoning machine that machines both ends of a workpiece at once — sizing, tenoning, profiling, and more in a single pass. Configured as a multi station tenoner with two to five machine centers, it works as a double end sizing machine and a double end profiling machine in one, delivering precise, square, production-speed parts for joinery and panel work.
Feature the latest in technology advancements, ensuring improved consistency, accuracy, superior joint, & quality of finish.
Whether you have a single-function or a multi-station application design, the Double-End Tenoner is constructed to accommodate severe-duty, multi-shift production.
Our intuitively designed state-of-the-art controls will improve your production. Durable construction also minimizes maintenance, resulting in reduced downtime & increased profits.
Specifications
Fast, Accurate, High Speed Production
Leading technology and lasting performance custom designed to meet your specific application requirements. Choose the right capacity and machining stations from Two, Three, Four or Five Machine Centers.
Features
- Interlocking block, air or spring roller, and belt type hold downs available.
- Trim Motors in combination with Jump Scores.
- High Speed Profiling Copes.
- Flat and Profile Belt Sanders.
- Abrasive Wheel Sanders.
- Stationary and Jump Dado Beams.
- Boring Stations.
- HSK and Stacked Tooling Options.
- CNC Contouring and Angle Gain Capability.
- Machine Base: Heavy wall structural steel weldment with linear rails and air actuated position lock.
- Feed Chains: smooth, corrugated, or padded surface. Snap-in, bolt-on, clamp-up, or pop-up type feed lugs.
Automation & Robotics
Tailored Solutions for the Solid Wood Sector
Mereen-Johnson stands at the forefront of delivering cutting-edge automated handling solutions that will streamline your workforce and wood machinery assets. Our smart, automated handling solutions are meticulously crafted to enhance your machine throughput and efficacy while substantially trimming your labor expenses.
Our complete spectrum of services ranges from conceptualization and design of production lines to installation, personnel training and ongoing maintenance, and we cater to a wide array of client requirements, offering both standardized system solutions and fully personalized options to suit your specific needs.
The Mereen-Johnson Difference
Made in the USA Quality
Vertically integrated manufacturing in the USA means we control every step of the process to deliver the performance and longevity that the industry has grown to expect from us.
Turnkey Custom Solutions
Listening to your specific needs, we will adapt a standard machine or develop a fully custom solution, including automation and robotics, and manufacture it in-house.
Excellence Under One Roof
Our state-of-the-art production space has room to build, test and prove large-scale design solutions. Design-build teams work together to make your custom concept a reality.
Parts, Service & Training
We will always support your machine. From training programs to replacement parts, schematics to software support, we’ve got you covered, remotely or onsite.
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How the Double End Tenoner Works
A double end tenoner carries each workpiece between two feed chains and machines both ends simultaneously as it passes through:
- Set the size. The two machine sides move along linear rails to the finished part length or width, then lock in place — so every part comes out to the same exact dimension.
- Feed both ends through. Dual feed chains carry the part squarely through matched stations on each side, machining both ends at the same time in a single pass.
- Machine in sequence. Stations are arranged in the order your part needs — trim and score to size, cope or profile, cut tenons or dados, bore, and sand — each side mirroring the other.
- Repeat at production speed. Because both ends finish together and to a locked dimension, the tenoner delivers consistent, square, glue-ready parts shift after shift.
With two to five machine centers, the same platform can be a double end sizing machine, a tenoning machine, and a double end profiling machine — configured to your parts and throughput.
Applications
The Double End Tenoner handles the operations where both ends of a part must be machined accurately and identically:
- End joinery — tenons, copes, and matching profiles on both ends of frame parts.
- Structural joinery — heavy, precise joinery for structural and engineered-wood components.
- Panel production & sizing — squaring and sizing panels to exact finished dimensions.
- Two-ended profiling — running matched profiles on both ends with high-speed copes.
- Flooring end-matching — tongue-and-groove profiles on the ends of flooring planks.
- Scoring & trimming — jump scores combined with trim motors for chip-free, exact-length parts.
From simple two-sided sizing to full multi-station joinery, each machine is configured to the parts you run.
Industries Served
The Double End Tenoner supports production across:
- Doors — stile, rail, and door-panel sizing and joinery.
- Windows — precision machining of window components.
- Flooring — end-matching and sizing of solid and engineered flooring.
- Furniture — frame parts, table leaves, and panel components.
- Cabinetry — face frames, doors, and panel sizing.
- Custom Millwork & Mouldings — profiled and sized components to spec.
Emerging applications: mass timber and engineered-wood construction, where the tenoner’s structural-joinery capability sizes and joins large structural components.
Frequently Asked Questions
What is a double end tenoner?
A double end tenoner machines both ends of a workpiece at the same time as it passes between two feed chains. It sizes the part to an exact length or width and can add tenons, copes, profiles, dados, boring, and sanding — producing consistent, square parts at production speed.
What’s the difference between a single end and a double end tenoner?
A single end tenoner machines one end at a time; a double end tenoner machines both ends simultaneously to a locked dimension, so parts come out sized and identical in one pass — much faster and more consistent for production.
Is it a sizing machine or a profiling machine?
Both. Depending on the stations you configure, the same machine works as a double end sizing machine — squaring parts to an exact dimension — and a double end profiling machine, running matched profiles or copes on both ends.
What is a multi-station machine center?
It’s a tenoner built with several machining stations in sequence — two, three, four, or five — so a part can be trimmed, scored, profiled, tenoned, bored, and sanded in one pass. More stations complete more operations per pass.
How many machine centers are available?
Two, three, four, or five station machine centers, each custom-configured to your parts and throughput.
What operations can it perform?
Trimming and sizing, jump scoring, coping and high-speed profiling, tenoning, stationary and jump dado, boring, flat and profile belt sanding, abrasive wheel sanding, and CNC contouring with angle-gain capability.
Can it be integrated into a production line?
Yes. Mereen-Johnson offers transfers and automation — infeed metering belts, part-rotation transfers, tenoner-to-moulder transfers, and lift-gate transfer chains — plus custom controls to reduce labor and set-up time.
Is it made in the USA?
Yes. Mereen-Johnson designs and builds its machinery in the United States, in Minneapolis, Minnesota, with U.S.-based parts and service.