What kind of wood is usually used for old weighing poles

Scales are made of hardwood. The north will use rosewood, pear, sour branch and other imported materials, because the north does not produce hardwood, while the south has more species of trees, such as ironwood, cudrania, Jinshi Li, red silk wood, etc., are good materials for making scales, local materials, that is, business strategy.

Generally speaking, the wooden poles used to make the scales are more selective and need to have fine grain and hard wood, and Quercus serrata and mahogany are the best materials.

In order to ensure that the wooden pole does not crack, after the selection of the material to be placed in a dry place after two days of stacking before use. Wood by chiseling, planing treatment, into a straight and long and thin oval cylinder, and then with a fine emery cloth dipped in water, polished and smooth, but also with polygonum beads back and forth rubbing.

From this point of view, the scale maker can definitely also be called a very good carpenter. After the ends of the wooden poles were covered with metal skins, the pole scales took shape.

Two thousand years ago, our ancestors used the principle of leverage to invent the wooden pole scale. In the Tang Dynasty, more units such as coins, minutes and centimeters were added to the scale. Seven coins were one or two, and seven cents were one cent. The scale followed the rule of sixteen taels for a catty, which continued for more than a thousand years.

Extended information:

Traditional pole scales are made by hand. p>Traditional pole scales handmade process:

1) Selection of scale wood: large scales generally choose the nanmu, small and medium-sized scales most of the use of the Qinba mountains in the Yangpo produced by the "red cotoneaster" wood, the wood by the drying of more than a year, according to the requirements of the measurements to be done to make the pole scales, saw cut to the appropriate length.

(2) planing pole: the first positive planing according to the craftsman's experience planing round, to achieve the appropriate size, and then use the reverse planing will be cleaned up the burr, the pole of the scale for the initial lightening.

(3) set "Chokou" two craftsmen cooperate with the use of the ink bucket, with a string in the scale rod popped out a few longitudinal equal ink lines.

(4) An "dangzi": gas one hand holding a knife from the bottom to the top of the support scales, after measuring the scales on the pole to find out the location of the three "dangzi"; will be fixed on the pole, in the body of the pole to install "dangzi "

The scales are made in a vertical perforation (in the past, the drill was used, but now the drill is used), and the three "dangzi" are installed on a trial basis.

(5) copper skin package welding: the two ends of the scale need to wrap the copper skin, will be pre-prepared copper skin according to the size of the required cut, will be cut out of the copper skin roller round, set on the end of the scale rod than the end of the head, and then trimming, and then welded with solder will be the copper skin welding. In order to facilitate the use of small nails can also be fixed method of copper skin package.

(6) installation of "dangzi", scales: scales are prefabricated, will be on the plate of the three ties knot to the big end of the scales on the outermost "dangzi".

(7) school scales fixed star: with "dangzi" will be suspended scales, weighing pan in order to put different weights on the weights, in the measurement of the distance on the scale pole, to two feet gauge division and carefully marked star flower position.

(8) nail the star flower: according to the position marked in the previous step with a belt drill to drill each small flower point, in the drilled holes with a fine copper wire embedded and then cut, hammered.

(9) grinding, cleaning: the use of steel files, oil stone along the longitudinal direction of the scale further grinding smooth; just made to the scale evenly brushed with a layer of lime water to remove oil. Lime water natural air drying that is washed with water

(10) scales dyeing coloring: nanmu scales using its natural wood color can be. Red cotoneaster scales are cleaned in lime water after brushing a layer of soap alum liquid, and then dry; and then evenly brushed with pre-modified five times the liquid, and then hang the scales again, so that it is completely dry, this time it usually takes 12 hours.

After the colored rods are completely dry, they are polished one last time to give them a glossy finish and to make the scales, or "star flowers," more legible.

Reference:

Baidu Encyclopedia of Weighing Sticks

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