The photo emulsion hardens where light hits it and will. Dry the screens completely before the students print their first layers. You use light to expose an image onto the screen to make a stencil. Follow the wash-out instructions included with the emulsion. You will see some of the emulsion begin to leave the screen in the areas that were protected by the image printed on the film positive. 1.What you need: a screenWhile I used a ready-made Speedball frame for this project, making your own screens is cheaper, and not hard to do.
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