In general, screen printing emulsions always need to be applied in a dimly lit room or, preferably, in a room with a yellow or red safety light.
The screen printing frame must always dry in total darkness.
The ideal solution is a lightproof cupboard.
If we put a small, inexpensive fan heater in the cupboard and set it to medium heat, the warm air will dry the frame in approximately 15 minutes.
The temperature must never exceed 35°C, because higher temperatures damage the emulsion and make the subsequent preparation in water more difficult.