修建商业、服务业性建筑设施时,经常需要在较大块的厚玻璃上掏挖圆孔。玻璃上挖圆孔,一般是采用机械加工。但是,机加工常受场地和条件限制,质量也难以保证。现介绍一种简便的玻璃挖圆法。在较大玻璃上挖圆,要求圆孔的位置应精确。先在三合板上画好两条相互垂直的线,以两线交点为圆心,按所需尺寸画成圆形,然后 When constructing commercial and service building facilities, it is often necessary to dig a round hole in a thick piece of thick glass. Digging round holes in glass is generally machined. However, machining is often limited by site and conditions, and quality is difficult to guarantee. A simple glass rounding method is introduced. Digging circles on larger glass requires that the position of the hole be precise. First draw two perpendicular lines on a plywood board, center on the intersection of the two lines, draw a circle of the desired size, and then