For fixing the film during drying, usually use special clothespins or clips. But if these instruments are at hand does not, they will replace ordinary paper clip.
Recommend to read
AVIATION ROCKET PC-2-US
In the late 1940's-early 1950-ies in the Soviet Union developed several aircraft guided missile of class "air—air". The actual results achieved by the designers who created the missile...
CLAMP FROM AIR…
One arm movement — and in an unusual vise clamped firmly from two shafts, the diameter of which can reach up to 120 mm. the Design of this hot clip is rather simple, based on it — four...
