The Complete Japanese Joinery

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Taruki kei facia. The taruki kei facia is a finishing piece which covers the ends of the purlin (moya) and main (keta) beams like the hafu facia which will be discussed later. The taruki kei facia is not just shallower than the hafu facia. Taruki kei facia originated during the Edo period when farmers and merchants were not permitted to incorporate the Softwood is easier to plane with harder steel. The planing quality is also affected by the angle at which the blade is set in the plane body. To plane hardwoods or extremely highly figured woods, 45-55° is the most efficient angle, and for softwoods, 30-35° is ideal. Very soft woods, such as kiri (paulownia) or balsa, may require 22°-30°. Most North American woods work well at an angle of 32°-35°. Generally, the harder the wood, the steeper the angle required to plane it. Some denser woods, such as maple or exotic hardwoods, may require a blade angle as steep as 55-60°. Through experience, a craftsman will learn the proper angle for use with each type of wood. BLADE Moisture and Ventilation Where there is considerable moisture, or poor ventilation which will prevent the lumber from drying, rot due to bacteria will develop and gradually weaken the structure. If a waterproof¬ ing solution is applied to the base members of the structure up to 3 feet from the ground, this will prevent moisture from entering into the wood. Shaping of the sori hafu facia. 1. Locate koshi haba at the midpoint of the hafu facia length. There are cases where koshi haba is located at % or % of the length from the ogami end. 2. The depth of koshi haba should be between 7/00 to %o of the length. (It is recommended that the sori hafu facia be made thinner.) 3. The tarumi depth should be between 4/00 to 3/00 of the length.

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Mesmerizing GIFs Illustrate the Art of Traditional Japanese Wood Joinery — All Done Without Screws, Nails, or Glue Making the top surface the peak, slope to equal the slope of the crown on the hip rafter. The depth 2-4 Joinery techniques in furniture making ( sashimono) can be even more complex and precise due to the softer woods used. Some drawers and boxes can be so precisely built that lids and doors close gently due to them being nearly air tight. Instead of closing the lid and having it slam down on top of the box, it will slowly slide down as the air leaks out; it creates an incredibly refined-feeling product.

If you want to learn more about Japanese joinery and how to use it in your daily woodworking projects, this book by Hideo Sato and Yasua Nakahara called The Complete Japanese Joinery will be of ample help. First Time Japanese Joinery Tips dozuki are used for cuts up to 45° from the perpendicular to the grain; rip dozuki are used from this point on. After the end surfaces are squared, using the ink line mark a line between the two squares on both sides of the piece, as shown in Figure 5.32. Plane the surface up to the lines to make one side of the piece completely square. Repeat this procedure until all sides have been squared. Methods of Treatment In the course of construction, two methods are used to prevent finished pieces from becom¬ ing dirty or discolored. Chona—adze An adze is used to trim and shape surfaces, such as in carving out a portion of a post sur¬ face, making a flat surface on a log, providing a flat area on a koya bari (roof beam) for the

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Cut with a rip saw along line A to intersect line B. Cut with a crosscut saw along line B to intersect line A Sori hafu facia. 1. The location for koshi haba is either at the midpoint of the length or at a point % of the total length from the The use of pin joint (also called a revolute joint or hinge joint) not only provides the building with a unique and friendly look, but also creates a certain tolerance in the joint to allow for small amount of freedom when the materials fit together, which as mentioned above, improves the stability of the overall structure. The fact that the pieces are replaceable allows the beams to be made from an entire piece of timber. The integrity of the material and the design pushed the wood beam’s capacity to the limit but created the open space required by the client. All the joints are consisted of the same material: pine wood. The wood splices have no metal parts, resulting in amazing details in the structural system which, when exposed, gives a very special character and unique spatial experience.saw horse, into the ground, or into one’s clothes. Instead, when nearing the end of the cut, it is important to slow down the sawing, holding the piece being severed with one hand, and continuing to saw gently until the cut is completed. When cutting through a piece, after a shallow cut has been made on the first side, rotate the piece away from you and continue cutting. The saw cut always advances toward you. Continuing this procedure until the piece is cut through allows a clean cut to be made, with¬ out splintering. Unlike Western sawing procedure, the piece is supported on both sides of the cut, whether on a bench or on saw horses, so that the cut end will not fall, risking tear¬ ing. Chisel out the diagonally marked "section on both sides between lines A and F until the haunch is squared.

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rect the conditioning of the body of a plane. Its blade is set perpendicular to its body, and it scrapes across the grain. It is used to correct any slight warp or twist. wider than the rough plane. The body should be adjusted as indicated in Figure 2.51. Adjusting the finishing plane.Kamuri of the roof. If the nobori urako or nobori yodo facia's overhang is small on a large roof, the hafu facia will appear too strong, therefore, they should extend out about 60mm to 100mm so as to cast their shadows on the hafu facia giving it a serene appearance. Traditionally, though, all Japanese joinery is done by hand and even today in Japan apprentices work under craftsmen to learn this art. With the help of Japanese joinery, you can join wood at perpendicular angles or join wood together. Understanding Wood Wood is alive. Even after trees have been cut, wood continues to respond to environmental conditions. Before, during, and after construction, changes in the wood’s characteristics can have serious consequences for the integrity of a structure. With proper understanding, mishaps can be foreseen and avoided.*

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Always keep in mind the kerf and cut outwards the markings that you have drawn on the wood. If you cut right on the line, chances are you might be cutting inside slightly. Precision is the key when it comes to Japanese joinery, so the pieces fit snug together. the roof to which the hafu facia is attached) should have a slope about 5/00 less steep than the rafter slope. This results in a fure sumi corner on the lower roof, as well as the hafu facia's becoming larger and there being more leeway at the end wall.Sumi ink is used, which is indelible once it dries. For marking a surface which will later be exposed, reddish-orange vermillion power or ground charcoal is substituted; these may be washed off after serving their purpose. Always make sure your chisels are sharp before working on any project. If they are not sharp they will not be able to carve with efficiency and precision. Cut along line B with a crosscut saw: on either side to intersect lines C and D; on bottom to intersect line A. Characteristics of Wood 41 Another way to protect lumber is to paint or soak it with creosote, but this process cannot be used in shiraki zukuri (natural wood) construction. But it will give you good practice on how to use your tools efficiently. Both these projects do not require a lot of lumber either. So the cost to pull it off is also minimal, minus the tools you will need if you don’t have them already.