I've been have issues. Emulsion is brand new. I coat, expose, and wash out. My stencil shows up as a lighter shade than
what's exposed, but is really stubborn and won't wash out properly. It's like the screen is holding on to it and not letting go.
I'm coating in the garage, it's between 40 and 50 degrees ... could it be the temperature?
Normally I don't need a pressure washer to wash it out, as the emulsion should be soft. In the past, it washes out
smoothly with just the flat spray of a garden nozzle.
Light is not an issue, i coat in the dark and they dry in the dark, no light until they hit the exposure unit.