Makita (KP312) 12-1/4" Planer, 15 AMP - KP312
The Makita 12-1/4-Inch Planer, (model KP312), is precision engineered for a even cutting, job after job. It is ideal for professional timber framers, carpenters, log home manufacturers, boat fabricators, and more. The KP312 features a 15 AMP motor that delivers 12,000 RPM for the most demanding jobs. The KP312 can plane up to 12-1/4 inches wide and 1/8 inch deep in a single pass. The non-slip long life poly “V” belt is designed to efficiently transfer power to the double-edged high-speed steel blades for consistent results. The front roller is engineered for easy moving of the planer over rough materials, and the large ejection chute provides a high rate of discharge and helps prevent clogging from wet or dry wood chips. The spring-loaded stand elevates the base to protect the blades and workpiece, and the ball bearing construction is engineered for longer tool life. The KP312 has several ease-of-use features, including a large, conveniently located depth setting knob for easy adjustment, and a guide rule for accurate and maximum use of planning width. The 33-foot cord is located at the top of the handle to help prevent obstruction during long and repeated passes. The rubberized front handle is designed for comfort, control, and reduced operator fatigue. The KP312 is engineered for professional timber framers, carpenters, log home manufacturers, boat fabricators and general contractors seeking a best-in-class 12-1/4-inch Planer.
Features
- Powerful 15 AMP motor with 12,000 RPM for improved performance
- Large, conveniently located depth setting knob for easy adjustment
- Poly "V" belt designed with grooves efficiently transfers power from the motor to the blades
- Large ejection chute provides high rate of chip discharge and helps prevent clogging from wet or dry wood chips
What our Experts Think
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Massive planing capacity: The 12-1/4" cutting width and up to 1/8" depth per pass make it ideal for large beams, panels, and oversized lumber.
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Powerful performance: The 15 AMP motor delivers 12,000 RPM for smooth, consistent cutting through tough materials.
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Efficient chip removal: The large ejection chute helps clear wood chips quickly, reducing clogging during continuous operation.
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Designed for job-site durability: The poly “V” belt power transfer system, ball-bearing construction, and protective spring-loaded stand help extend tool life.
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Expert verdict: A professional-grade planer built for serious woodworking projects where wide cutting capacity, reliability, and precise results are essential.
Q&A
Q: What is the Makita KP312 planer?
A: The Makita KP312 is a professional 12-1/4" handheld power planer with a 15 AMP motor, designed for timber framing, carpentry, log home construction, and large woodworking projects.
Q: How powerful is the Makita KP312?
A: Its 15 AMP motor delivers 12,000 RPM for fast material removal and consistent planing performance on demanding jobs.
Q: What is the maximum cutting capacity of the KP312?
A: The planer can handle up to 12-1/4" wide cuts and removes up to 1/8" of material in a single pass.
Q: What applications is the Makita KP312 ideal for?
A: It is designed for professional timber framers, carpenters, boat builders, log home manufacturers, and contractors working with large wood beams and panels.
Q: Does the KP312 provide efficient chip removal?
A: Yes. Its large ejection chute improves chip discharge and helps reduce clogging when working with wet or dry wood.
Q: Is the Makita KP312 comfortable to use?
A: Yes. It features a rubberized front handle, front roller for easier movement over rough material, and a large depth adjustment knob for improved control.
Q: What type of blades does the Makita KP312 use?
A: It uses double-edged high-speed steel blades designed for efficient, even cuts and long service life.
Q: How durable is the Makita KP312?
A: The KP312 features a poly “V” belt power transfer system, ball-bearing construction, externally accessible brushes, and a spring-loaded stand to help protect the tool and workpiece.
Q: What is included with the Makita KP312 planer?
A: The package includes high-speed steel blades, socket wrench, triangular rule, and other standard accessories for setup and operation.
Maintenance Tips
- Clean wood chips, dust, and debris from the cutter head, base, rollers, and vents after each use.
- Inspect planer blades regularly for dullness, chips, or damage; sharpen or replace blades as needed for smooth cuts.
- Keep the cutter head and blade area free from resin and buildup to maintain cutting performance.
- Lubricate moving parts and adjustment mechanisms periodically for smooth operation.
- Check feed rollers for wear and clean them to maintain consistent material feeding.
- Keep ventilation openings clear to prevent motor overheating during heavy-duty planing.
- Inspect the power cord, switch, and handles for damage before operation.
- Verify depth adjustment controls and locking mechanisms work properly before use.
- Avoid harsh cleaners; use a soft cloth or brush to remove dust and debris.
- Store the planer in a dry location and protect the cutter head when not in use.
Damage 
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