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
THE PLANE TAKES OFF VERTICALLY
The aircraft belongs to those fields of technology which are developing particularly rapidly. In a historically short period of time, speed, altitude, payload, flight range of the...
How did we make a scuba gun?
Imagine this: you're standing by a river, the water is crystal clear, and fish are darting just beneath your feet. But instead of store-bought gear, you're holding a speargun built with...
