During chemical processing of photographic plates and papers usually use medical tweezers (it can be purchased in the pharmacy). However, the notch in the jaws often damage the emulsion layer. To prevent this put in the jaws of the tweezers p polihlorvinilovuju tube with a diameter of 2-3 mm. pre-softened in acetone. After drying, the tube is firmly tight lips.
Recommend to read
With a boat on… a bicycle
Our industry produces various inflatable and folding boats for fishermen, hunters, and water tourists. However, they do not satisfy the demanding tastes of consumers in everything, so many...
RETURN TO BOOMERANG
Today the state of technical creativity of pupils, I think we all know — it is deplorable. And even a talented teacher to inspire children is becoming increasingly difficult. One of the...
