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绘图人员很辛苦地描好了一张图,不幸着了一个大污点或画错了一大块,如用普通胶水挖补,乾后成一绉疤,不能再用。下面介绍一个简便的方法,可以使挖补后的图仍然可用。应用材料:硝酸纤维素清漆(天津永明漆厂有小罐出品),透明玻璃纸(不带色,一般复写用的)。用法:先在玻璃板上把预备挖补用的图纸压在已画错的图纸下面(两种图纸颜色质量必须一致,以免挖补后显出痕迹),用小刀切去应挖补的部分
The drawing staff painstakingly sketched a picture, unfortunately, with a big stain or painted a large piece, such as digging with ordinary glue, dried into a crepe, can not be used. Here’s a quick and easy way to make a digged map still workable. Application materials: nitrocellulose varnish (Tianjin Yong Ming paint factory has a small jar produced), transparent cellophane (without color, the general use of replication). Usage: first prepared on the glass with digging drawings used in the drawing has been wrong underneath the drawings (the quality of the two drawings must be the same color, so as not to show signs of digging), with a knife cut should dig up the part