Description

Key Features

Fast Mortising Power

The 10.5 amp motor runs at 3,200 RPM with a chain speed of 1,000 feet per minute, so this chain mortiser cuts notches and through-holes in thick wood stock without dragging the job out.

Built for Big Timbers

The adjustable vise clamps onto logs from 3-1/8 inches to 12-1/8 inches thick and cuts lap joints up to 5-1/8 inches, which matters when you’re working with serious timber instead of trim stock.

Portable for the Class

At 38.1 pounds with a built-in carrying handle, it is still a substantial tool, but it is manageable enough to move around framing sites and log projects without turning setup into its own chore.

Overview

The Makita 7104L Chain Mortiser is a purpose-built mortising tool for timber framing and log home work. This is a chain mortiser designed for cutting clean notches, mortises, lap joints, and through-holes in thick wood stock. Model Number: 7104L. If you are building with large timbers or logs and need repeatable cuts that are hard to do efficiently by hand, this is the kind of machine that earns its place fast.

Power is straightforward and job-focused here. The 10.5 amp motor delivers 3,200 RPM, while the chain runs at 1,000 feet per minute. In practical terms, that means the Makita 7104L Chain Mortiser is set up to cut quickly through heavy material instead of bogging down in dense stock. Makita rates it for a maximum longitudinal hole width of 5-1/8 inches, a maximum transverse hole width of 1-1/4 inches, and a maximum hole depth of 6-1/8 inches, so it has the range needed for real timber joinery work.

Capacity is a big part of why someone buys a tool like this. The large adjustable vise is made to attach firmly to logs and timbers from 3-1/8 inches to 12-1/8 inches thick. That matters because stability is everything when you are cutting structural joinery. A loose setup costs time and accuracy. The sliding rear clamp adjusts to the width you need with a quick-adjust tension knob, and the clamp tension lever helps lock the tool down so the cut starts where you intended it to start.

Makita also put real thought into cut control. The plunge depth adjustment works in 1/8 inch increments, which gives you a practical way to dial in repeatable depth without guessing. There is also a cutting line indication plate and an adjustment knob for re-positioning the chain across the log. Those are not gimmick features. On timber work, small alignment errors show up fast, especially when parts have to fit together on a frame or log structure.

The chain system is built around clean, accurate cutting. Makita calls out the razor-sharp chain specifically, and that is the whole point of this tool category. You are not just hogging out wood. You are trying to make a usable joint with less cleanup afterward. The quick horizontal chain lever for widening holes adds flexibility when the layout calls for a wider opening, and the chain tension adjustment cover with snap action helps keep maintenance more manageable.

From a design standpoint, this is a specialized tool made for field use, not just shop use. It weighs 38.1 pounds and has a built-in carrying handle, which makes it portable enough for timber framing sites and log construction where the workpiece is too large to bring to a stationary machine. Makita also includes durable protection for the twin steel rails and externally accessible carbon brushes for easier service when the tool sees regular use.

The Makita 7104L Chain Mortiser is a corded 120 volt machine, so it is meant for crews and builders who want consistent runtime and do not want to think about battery swaps in the middle of layout-heavy joinery work. It is best suited for timber framers, log home builders, and serious woodworking professionals working with oversized stock. A general carpenter will not need this every day, but if cutting timber joints is part of your work, this tool solves a very specific problem a lot faster and cleaner than improvised methods.

Clamp Down on Large Stock

Big timber work gets frustrating in a hurry if the tool will not stay planted. This setup is built to grip the material securely so you can focus on layout and cut accuracy instead of fighting movement.

• Adjustable vise attaches firmly to logs and timbers from 3-1/8 inches to 12-1/8 inches thick
• Sliding rear clamp and quick-adjust tension knob help match the tool to the stock width
• Clamp tension lever helps hold the tool steady during plunging cuts

Cut Accurate Mortises Faster

This tool is about getting a clean, repeatable cut in thick wood without wasting time with multiple setups. The chain-based cutting action is made for timber joinery where speed is important but a sloppy cut is not acceptable.

• 10.5 amp motor delivers 3,200 RPM for quick cutting in thick stock
• Chain speed reaches 1,000 feet per minute for efficient mortising
• Maximum hole depth is 6-1/8 inches with lap joint capacity up to 5-1/8 inches

What’s in the Box

• 21/32 inch Mortiser Chain
• Sharpening holder
• Wrench
• Bar and chain oil, 100 cc

Key Specifications

Amperage (A)	10.5 A
Voltage (V)	120 V
No-Load Speed (RPM)	3,200 RPM
Chain Speed	1,000 FPM
Max. Hole Width, Longitudinal	5-1/8 in.
Max. Hole Width, Transverse	1-1/4 in.
Max. Hole Depth	6-1/8 in.
Log Capacity	3-1/8 in. to 12-1/8 in. thick
Overall Length	20-1/8 in.
Weight (lbs)	38.1 lbs
Made In	Japan

Built For

Timber FramingLog Home BuildingHeavy Wood JoineryWoodworkingConstructionGeneral Contracting

Pro Tip

When you are cutting repeated lap joints, set your plunge depth in 1/8 inch increments and use the cutting line indication plate before clamping down. It saves time on test cuts and helps keep every joint consistent across a full run of timbers.

Warranty & Support

1 Year Limited warranty.

Tool Nut’s Take

Tool Nut’s Take

Makita 7104L Chain Mortiser for serious timber work

The Makita 7104L Chain Mortiser is a specialized machine, but for the right buyer it is a huge time-saver that makes cleaner, more repeatable timber joints than makeshift methods.

• Who it’s for: Timber framers, log home builders, and woodworking pros regularly cutting mortises, notches, and lap joints in large stock.
• Why it stands out: Strong clamping range, practical depth control, and the chain cutting system all work together for fast and accurate heavy wood joinery.
• Worth knowing: This is not a general-purpose shop tool. It is a dedicated corded mortiser, and that is exactly why it works so well when timber joinery is the job.

Common Questions

• What is the Makita 7104L Chain Mortiser designed to do? It is designed to notch or cut through-holes, mortises, and lap joints in thick wood stock for timber framing and log home building applications.
• How thick of a log or timber can it clamp onto? The adjustable vise is rated for material from 3-1/8 inches to 12-1/8 inches thick.
• What is the maximum cutting depth? Maximum hole depth is 6-1/8 inches.
• Is it corded or cordless? It is a corded 120 volt tool.