A piece of iron wire connects the arm to the turnbuckle, then a piece of guitar string is used to connect it to the top of the frame, where it passes over a small steel plate with a " V " filed in it. 用一段铁丝把吊臂和螺丝扣连接起来,然后再用一段吉他弦把螺丝扣连接到框架的顶端,经过一片用锉刀锉出V型刻痕的小钢板。