Traditional classical redwood furniture does not need a nail, completely plugged into, as stable as Mount Tai, where is the secret? This is the crystallization of the great wisdom of the ancients – the structure of the dragonfly. Hanging pin through the structure as a leg foot and dental plate combined with each other part of an important structure, the technical key is on the hanging pin, the process is very skilled.
From the upper end of the leg and foot oblique shoulder area, diagonally is trapezoidal, upper narrow and lower width, and the tooth plate hanging pin groove consistent. This structure strengthens the gravity, with other slugs can form a “standing wooden jack” effect. Overlooking the hanging pin cross-section can also be seen through the trapezoidal shape of the swallowtail, its processing technique is that in the leg-foot hanging pin near the inside of the oblique shoulder with a squeeze angle chisel to make an inner slope, the outside of the hanging pin first with a small hug saw out of the groove, and then with the horse’s teeth to press the outside of the hanging pin into a slope.
Hanging pin through
The difficulty of this structure lies in the dimensional accuracy of the pins and grooves on the legs, if the distance between the leg foot and shoulder (the tip of the oblique shoulder) and the pin is less than the distance between the shoulder and groove of the teeth plate, the tooth plate will be higher than the upper shoulder of the leg, and the reverse will be lower than the upper shoulder of the leg. And in the case of maintaining the traditional brake work can not be missing, but also to reserve the brake half saw or a saw room, here requires the craftsman to brake when a saw is strict, there is no second saw opportunity. Because a multi-brake saw will cause the tooth plate straight edge, lower than the upper shoulder of the leg, so that the four-sided tooth plate is not on a plane. The structure of the perforation hanger can support the front, rear, left, right and upper five directions, and the four legs of the classical redwood furniture are firmly “bundled” together with the four-tooth plate, so that the furniture reaches an extremely strong degree.
Hanging pin through, also known as hanging shoulder
However, regardless of the old and new classical redwood furniture, can be seen because the leg foot and tooth plate material selection is difficult to achieve absolute straight silk texture, the use of soon will appear leg foot and tooth plate oblique shoulder connection to shake the situation, the longer the time, the more distorted the texture, the larger the gap, which is not beautiful, but also affect the firmness of the furniture. This is highly vulnerable, particularly in the case of seasonal turnover and changes in the use of the environment, both in the South and in the North. When repairing later, you must close the seams, the seams that are about to be shaken open.
At this time, the original size of the furniture will be reduced, the original tight hanging pin position will also change, which requires the swallowtail-shaped pin internal shift, contact with the outside of the hanging pin of the inside of the pin groove needs to be widened, resulting in the hanging pin narrower than the width of the slot, and finally in the hanging pin inside the paste to ensure the strength of the combination of the hanging pin and the slot. But even the paste is not as strong as the original wood, so repair is very troublesome.
