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Lie Nielsen No. 40B Butt Mortise Plane

Product code: 421047

Availability: Out of stock

Currently out of stock - expected back in 6 weeks



ex VAT

Free UK delivery on most orders over 45 pounds

Lie- Nielsen No. 40B Butt Mortise Plane

The Butt Mortise Plane will help you prepare and hang doors in a fraction of the time required to set up a router and template. This tool is easy to use and will make precise mortises with sharply square corners to an accurate, uniform depth.

Useful for installation of hardware such as hinges, lock fronts and strike plates, as well as mortising dutchmen to repair flaws in jambs, furniture and doors. The elongated slot in front of the blade provides a clear view of the work. This tool does a job no other plane can do.

Ductile Iron body, 9-5/8" (24.44cm) x 1½" (3.81cm). Blade is ¾" (1.90cm) wide x .115" (2.92mm) thick.


Blade Sharpening: The blade comes ready to use. Slight additional honing will increase performance. A secondary bevel of up to 5 degrees helps achieve a razor edge quickly. This also improves edge life in hardwoods.

Materials: The body is cast from Ductile Iron, a virtually unbreakable alloy. It is 9-5/8" long and 1-1/2" wide. The blade is 3/4" wide. The castings are fully stress-relieved, a process that removes inherent stresses and ensures that the tool will remain flat and true. The cap is Manganese Bronze. Other parts are Brass, Steel and Cherry.

The blade is A-2 Tool Steel hardened to Rockwell 60-62, cryogenically treated and double tempered. Our heat treating technique ensures that the blade will take and hold a very fine edge for a long time. After heat treating, the blade is fully surface ground on the top, back, and cutting edge, giving a smooth, flat surface that will take a mirror finish very quickly. Wood parts are finished with wiping varnish.

Maintenance: Protect the body and blade from rust with a light oil.

Guarantee: Materials and workmanship are guaranteed for the life of your tool.