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Lie Nielsen No. 4 Bench Plane Bronze/Iron

Product code: grouped-403

Availability: Out of stock

Free UK delivery on most orders over 45 pounds

A full size Smoothing Plane, 9½" (24.1cm) long, 2" (5.08cm) x .125" (3.17mm) thick blade, 4lbs (1.81kg) in Iron, 4½lbs (2.04kg) in bronze. Capable of taking the finest shavings from the most difficult woods. Now with improved chipbreaker.

Featuring the famous Bedrock frog, giving the ability to open or close the mouth without the need to dismantle the plane. The fully machined mating fit between the frog and body along with a 3mm thick blade virtually eliminates the possibility of chatter. The soles are hand flattened, the cherry wood knob and handle are polished with a wiping varnish. The A2 cryogenically treated blade only requires a light honing before the plane is ready to use.


Lie-Nielsen Bench Planes (except for the No.1) are based on the Stanley Bedrock-type planes. Bedrocks were Stanley's top line of Bench Planes, heavier and better made than the standard. In addition, the construction of the frog is unique - it features a fully machined fit between the frog and body, adjustable from the rear without having to remove the blade and cap. This allows you to easily change the mouth setting from a coarse to fine cut for difficult woods or fine smoothing passes.

Geometry: All Bench Plane blades are bedded at 45° with bevel down.

Blade Sharpening: Your Lie-Nielsen is ready to cut wood out of the box. The blade is ground sharp with a 25° bevel. A secondary bevel of up to 5° helps achieve a razor edge quickly. This also improves edge life when planning hardwoods.

Mouth Adjustment: To adjust the mouth opening, loosen the two locking screws at the back of the frog, then turn the middle adjuster screw. Observe the opening in front of the blade. When it is correct, set the locking screws again.

Improved Chipbreaker: The improved Chipbreaker is 1/8" thick. The raised lip under the bevel of the chip-breaker is back beveled 1° to ensure that the leading adge contacts the blade firmly. You should never need to dress this surface, but if you do, use a very fine stone and be sure to maintain the angle. The 25° bevel may be honed occasionally. For general work, set the end of the chipbreaker about 1/16" from the cutting edge of the blade, for the finest smoothing work, set it closer to the edge.

Blade Adjustment: To advance the blade, turn the adjuster nut clockwise. It is always a good idea to finish adjusting the blade by a forward adjustment to take up backlash and to prevent the blade from moving. In order to be able to adjust the blade easily, do not overtighten the lever cap screw.

Materials: Iron tools are cast from Ductile Iron, a very strong alloy that will take a lot of abuse. The bronze bodies are Manganese Bronze. These castings are fully stress relieved, a process that removes inherent stresses and ensures that the tool will remain flat and true.

The blade is A-2 cryogenically treated Tool Steel, hardened to Rockwell 60-62 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. The thick blade provides solid chatter-free cutting. The cap is Manganese Bronze.

Maintenance: The soles of Iron planes are surface ground flat and square, and the Bronze planes are lapped to a tolerance 0f .0015". Depending on how much use your tool gets, an occasional light sanding with 320 grit or finer wet & dry paper on a flat surface will keep the sole in as-new condition. Tools with Iron bodies should be kept lightly oiled or waxed to prevent rust. Lie-Nielsen recommend Camellia Oil, a vegetable oil based product. A light oiling on the threaded rod, the Brass adjuster nut and the lateral blade adjustment lever will keep them moving freely. Many people like the patina that bronze gets with age and use, but if you wish to keep the finish bright, a little brass polish is in order. The cherry knob and handle are finished with varnish and should require no maintenance.

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