A quick photographic guide to using Diazo Photo Emulsion (Speedball or Jacquard) with a simple home set up. Step 1) To start you need a grease-free, clean, dry screen. You can use Speedball Speedclean, Screen Cleaner or even washing up liquid. Wash and rinse your screen well and then leave to dry. To coat your screen … Continue reading "How to use Diazo Photo Emulsion"