25瓩的交流电焊机,原来的线圈不变,在次级线圈上加一个紫铜板(厚:8毫米,宽:20毫米,长:270毫米)作的线圈,两端打20毫米的孔作接线用,并用电木或有机玻璃做螺钉把它固定在原次级线卷上,成马蹄形(两端距离100毫米)。用半线和铜皮引出两极,一极是用5×50毫米的半铜板制的,另一极用5×50毫米半织线制成(这极要求灵活)。然后将这两极再引到点焊机 25 瓩 AC welder, the original coil unchanged, in the secondary coil plus a copper plate (thickness: 8 mm, width: 20 mm, length: 270 mm) for the coil, the ends of the hole to play 20 mm Wiring, and use bakelite or plexiglass to do the screw to fix it on the original secondary coil, into a horseshoe shape (both ends of the distance of 100 mm). Draw the poles with half-line and copper-clad ones. One pole is made of 5 x 50 mm half-copper plate and the other pole is made of 5 x 50 mm half-yarns (this is extremely flexible). Then redirect the two poles to the spot welder