Awards & Engraving

February '19

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Page 47 of 84

A&E FEBRUARY 2019 • 45 "Photoresist film allows instant reproduction of your artwork. It is also important because you can make multiple stencils quickly for production runs and is surprisingly sand resistant. You can achieve detailed imagery using photoresist film." —Liz Haas, Rayzist How can users determine if their film is exposed correctly? "There are a few key factors that determine if you exposed your photore- sist film correctly. Proper print and density, proper compression from your exposure device, and correct exposure time provided by the film manu- facturer. You must have correct print opacity for success of developing photoresist film." —Liz Haas, Rayzist "With all photoresist films, establish the correct exposure time for your particular exposure unit and follow the film instructions. The key to proper exposure for dry-processing film is getting enough UV energy into the film so it changes color from green to dark blue where light hits the film and makes it brittle. Dry-processing film is tolerant to over-exposure, so always error on the side of more exposure rather than less. With washout films, if the artwork is of correct density, slightly longer exposure times shouldn't have a negative effect on the final mask." —Michael Sullivan, IKONICS Imaging "I always teach people to hold their design up to a light — if you can see through the clear areas, the resist has been removed properly. If there appears to be a haze or gray areas, you may need to washout the design a little bit more. Be careful not to over-washout Sandcarving Systems SR3000 TM Self Stick Photoresist Film 800-729-9478 3 Easy Steps Automatic Washout Systems

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