![]() jars of Speedball Fabric Screen Printing Ink (one each. You can measure your lamp with two exposures using a Stouffer 21 Step Scale to measure the stencil hardness, then refine your exposure with an exposure calculator. For artists ready to tackle both the Drawing Fluid/Screen Filler and the Photo Emulsion methods of screen printing to print on paper, this kit is an excellent find The Speedball Intermediate Kit includes: (1) 10x14 Speedball Wooden Screen Frame (1) Red Baron Squeegee (2) 4oz. These estimated time charts are based on known commercial screen printing UV light sources on 305 mesh. Start by checking the suggested exposure time on the product Technical Data Sheet. When the stencil doesn't hold in the mesh, it didn't get enough exposure. First time printing an image using halftones. I also, burn my screen in the sun for 1 minute. So remember kids: green means go Or alternatively, if its still blue, its poo. From my experience, I air dry the screen for 48 hours for the best results. Did the same exact burn with the blue emulsion and it washed out again. I tried a 50W 365nm LED light, a blue light, and a 75W incandescent blacklight. Screen makers can only expose one side of the stencil, so it is important for the UV energy to move through the stencil, all the way to the back, where the squeegee blade will rub the stencil where it is weakest. Using Speedball emulsion w diazo activator. Apply SPEEDBALL Photo Emulsion Remover liberal-. This is nothing more than exposing the screen on the unit for 10 to 15 minutes or setting it in the sun for 5 minutes, why During your initial exposure your. I think you answered your own question and I’m experienced at working with Speedball emulsion. Unfiltered black light tubes will cut exposure time consid- erably. ![]() It appears you may be looking for information on exposure or burning screens. ![]() Me and my friend had trouble applying it to the screen. You block UV energy with a positive during exposure so the image area dissolves when you develop the stencil with water. The emulsion got very thick with time at the very end of its shelf life. Invisible UV energy reacts with emulsion sensitizer and hardens the stencil so it won't dissolve with water and rinse down the drain. It is the primary job of the screen maker to learn how to judge exposure. I have recently moved and am not sure if the climate is the problem, but the Emulsion is drying to fast and hard before I burn the screen.
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