Screen printing tricks: Cover pores after exposure

Well, you have already learned to make perfect screens, you emulsion them with one hand and without looking, you clean them and let them air dry because now it's spring and they dry very well with the sun and the air. You are going to start printing... you look at your beautiful screen against the light and see small dots, mesh pixels, in several places where they bother you for printing. Yes, I am talking about those small dots, that are barely visible but when you print they are "big" enough for ink to pass through and ruin the print.

Many of those little dots/pixels/open pores can be covered on the outside of the screen with adhesive tape/cellophane without problems, but often Murphy's law appears and you find a dot where you can't put tape because there is no space... Now what? No problem, we open our emulsion bottle and take a brush, dip it in emulsion and start painting on the screen. Carefully and patiently we can cover those dots, the emulsion dries very fast and doesn't leave thickness on the screen.

If you have expired emulsion, don't throw it away, it can be useful for these small fixes since it dries very quickly.

I recommend that if you use tape to cover the holes, always place it on the outside of the screen, this way you will avoid it bothering and the tape lifting due to the friction of the squeegee rubber.