在手头没有金刚石玻璃刀的情况下,可以把废旧车刀上的硬质合金焊在一钢条上。焊牢后,在砂轮机上磨尖,做成一根划针状。使用时,将欲划的玻璃放在平整的木板上,按所需尺寸以直尺或其它物品压紧,连续用力划几次,直至将玻璃划裂。 In the absence of diamond glass knife on the case, you can put carbide car scrap tools welded to a steel. After welding, sharpening on the grinder, made a needle-shaped. When using, the glass to be planted on a flat wood, according to the required size with a ruler or other items pressed together, forced a row a few times until the glass cracked.