Blue-prints and White-prints or blue-lines

(June 2017 These days we are working on a few blue-prints and blue-lines in our lab. Before starting any work, we tried to discuss the original material and technique used into making them, with our team.) Both these processes use different light sensitive chemicals for re-producing or copying the original drawings made on translucent paper. These processes were discontinued over a period of time because … Continue reading Blue-prints and White-prints or blue-lines