3. Poor screen preparation is a major cause of pinholes. Particles of dirt, wood frame chips, and dust remaining on the fabric during coating will be trapped in the emulsion. Opaque, they will block light from hardening the emulsion beneath them, so that the emulsion in these small areas will wash away after exposure.
Check the weather in Casablanca in January before you book your next holiday in Morocco. Long-term weather averages give the best indication of the weather in January 2017 and include figures for temperature, sunshine and rainfall for Casablanca, Morocco plus [sunrise & sunset times].
Temperatures still average around the mid-20s in December and you can still enjoy around seven hours of sunshine a day. December is a great time to visit Morocco and the coastal resort of Agadir still enjoys pleasant sea temperatures.