![]() ![]() Once the screen is clean and all emulsion has been removed you may then wash the screen out with water. Once you have started removing Photo Emulsion you must not let the screen dry or apply water until completely clean. Scrub both sides with the nylon bristle brush and flush with a hard spray of hot water. Keep the screen in a horizontal position for three (3) minutes. Again, apply Speedball® Photo Emulsion Remover liberally to both sides of the stencil. Immediately scrub both sides of the stencil with a dry nylon bristle brush. ![]() To REMOVE: (DO NOT APPLY WATER UNTIL EMULSION IS COMPLETELY REMOVED) Apply Speedball® Photo Emulsion Remover liberally to both sides of the stencil using a paintbrush. Adult supervision is recommended for this procedure. Photo Emulsion should be washed out of your screen as soon as your print run is completed – unless you want a permanent stencil.Ģ. This kit contains: 7 oz jar of photo emulsion, 8 oz jar of photo emulsion remover, one 1 oz bottle of condensed sensitizer and detailed instructions.ġ. The Diazo method allows for fine line drawings, various lettering techniques and photographic half/tone positives. Make sure weather conditions are conducive to the amount of exposure time you have.This is a complete kit for creating print ready screens using the photographic method.Protected (positive) areas of the screen do not receive the UV rays and, therefore, remain soluble in water. The light hardens the unprotected (the clear, or negative) areas of the screen's coated surface, preventing ink from being pushed through. The exposure process works like this: The emulsion responds to the UV rays of the sun.Always keep the distance from the bulb to the screen constant when testing. A photo-flood, sunlamp bulb, or even flourescent light can be used, but you will have to test exposure times specific to the particular light source you use. The emulsion should change color from a light pink or light blue-green to a dark blue-green when fully exposed.Under hazy, cloudy conditions or with exposure during the late afternoon, it might take up to 2 hours, so plan accordingly. On a clear day at noon in winter, 40 minutes will be the likely exposure time. On a clear day at noon in the summer, 20 minutes is enough time to harden the exposed emulsion. Exposure times will vary depending on the time of year, haze, cloud cover and time of day.Make sure weather conditions are conducive to the amount of exposure time you have. ![]() The emulsion should change color from a light pink or light blue-green to a dark blue-green when fully exposed. ![]() For use with any water-based or solvent-based ink and can be easily removed with Speedball’s Photo Emulsion Remover. On a clear day at noon in the summer, 20 minutes is enough time to harden the exposed emulsion. Diazo Photo Emulsion: Delivers professional-grade results without the need for expensive equipment and darkrooms. Move closer if necessary, increasing the pressure of the hose and focusing it on any areas that do not seem to be washing away.Ĭontinue until all the positive, unexposed places in the screen are washed clear.Įxposure times will vary depending on the time of year, haze, cloud cover and time of day. Within 2 minutes the screen will start to open up and the positive areas will start washing away. At first, do this with low pressure from a distance. Use a garden hose or power washer to spray the entire surface of the screen with water. Place the screen in an upright position, braced in such a way so as not to move when sprayed with water. Wheel the contact unit into a shady area (or indoors if there is an area set up for washing inside) after exposure.ĭisassemble the unit, removing the art and glass from harm's way. Let the contact unit sit in the direct sun for at least 20 minutes. Use a dolly, a little red wagon, or two people to take the entire unit out into direct sunlight, being careful not to disturb the glass or move the art around in any way. (The emulsion is slow, so you can do this quickly under normal light.) Make sure there is contact over the entire surface of the art. Place the plate glass over the art, sandwiching the art between the glass and the silkscreen mesh. ![]()
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