2021蕉葉琴1225進度

2021-12-25

蕉葉琴粗灰塗刮

古琴灰胎作用於提高其木質結構的耐候性、表面強度、弦路手感校正，另一方面也是參與古琴振動發聲的重要環節之一。相反；這一步也可作為古琴音色逆向調整的操作之一。

琴面灰胎塗刮的精細度基於前期裹布均勻程度以及實際塗布區域的合理安排。而灰胎塗刮過程大致分為粗灰、中灰、細灰三大步骤，其操作自古至今則衍生出塗刷、涂刮、打捏、撒粘四大類。

傳統與主流的粗灰塗刮操作選用經過脫脂、除膠、粉碎、層篩處理後的鹿角顆粒或外加貝殼、礦石、寶石等不同比重與軟硬的混合物。

增厚性塗層處理尤其注重其固含量，加之由於天然生漆交聯固化反應需要適宜的氧氣及濕度環境，所以在塗布過程中就需要兼顧顆粒加高同時滿足其所需的固化反應條件。隨後在固化後進行校準磨平與顆粒面的下一步填充。

The lacquer-mixture coating of the Guqin is used to improve the weather resistance, surface strength and touch or playing feel correction of its wooden structure. Otherwise; this step can also be used as one of the operations for reverse adjustment of the Guqin tone and timbre.

The smoothness of the lacquer-mixture layer on Qin surface is based on the uniformity of the previous cloth wrapping step and the reasonable arrangement of the actual scraping area. The lacquer mixture coating and scraping process is divided into three steps: thickness increasing of crushed antler granule, rough surfaces filling of medium pulverization, and smoothing fill up with lacquer-pulverization mixture. Since ancient times, its coating operations may derived from four type: brushing, scraping, pinching, and sticking.

The traditional lacquer-mixture coating and scraping operation selects antler granule after degreasing, degumming, crushing, and layer sieving, or adds shells, colored ores, gemstones and other mixtures of different specific density and stiffness.

The lacquer-mixture thickening coating and scraping needs to pay attention to its solid content. In addition, due to the cross-linking curing reaction of natural lacquer, it needs suitable oxygen and humidity environment. Then it is necessary to take into account the thickness increasing of particles and the conditions requirement of curing reaction during the operating process. Then the next step of calibration grinding and rough surface filling is then carried out after cures.