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天平一般由秤杆、支架、秤盘等部分粗成。这里介绍一种简单的制做方法。材料:细毛笔杆一根(6～8毫米直径,160～200毫米长); 旧刀片一个; 木块一块; 薄铅皮、硬纸、纱线少量。制法:拔净毛笔杆上的笔毛,揩刮干净,并将笔毛一端不坚实的部分切去一段(约5到10毫米左右),并在中央(略偏粗的一端)刻一楔形槽(图1)。槽底mn要求准确地通过笔杆重心,即中心线分界面处,并且要刻得光、直、尖,以便与支点刀片的刃吻合。再在笔杆上两端离中央槽底等距处刻二个槽(图2)。这二个槽先刻得浅一些,不到中心分界面。将用过的旧刀片嵌入木块内,
Balances are generally made up of parts such as weigh bars, brackets, and weighing pans. Here’s a simple way to make it. Material: One fine brush (6 to 8 mm diameter, 160 to 200 mm long); One old blade; One wooden block; Thin lead, cardboard, and a small amount of yarn. Method: Pull out the bristles on the brush bar, scrape it clean, and cut off a part of the hair that is not solid (approximately 5 to 10 mm), and make a wedge in the center (a slightly thicker end) Slot (Figure 1). The groove bottom mn needs to accurately pass the center of gravity of the pen shaft, that is, the centerline interface, and must be light, straight, and sharp in order to match the blade of the fulcrum blade. Then, two slots are carved on both sides of the pen shaft at equal distances from the bottom of the central groove (Figure 2). The two grooves are first lighter than the center interface. The used old blade is embedded in the wooden block.