Awards & Engraving

August '19

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90 • A&E AUGUST 2019 A sandcarved photo is a unique gift that communicates personalization for your customers. A sandcarved photo can be used for an anniversary or birthday gift, as a memorial piece, or can fulfill many other options. Traditional sandcarved photos are etched as a half-tone screen. The half-tone screen is a dot pattern. There are other patterns avail- able for photos such as a dithered. These screens create a different look to the etched photo. Sandcarved photos look best etched on a slightly darkened background such as wine bottles, black glass, black granite, and any glass that has a shaded/darkened area. The darkened area provides a contrast to the etched photo. Clear glass can be used, but the etched photo may not be clearly seen in a bright or well- lit area. One option to avoid this is to place a dark background (such as black felt) at the back of the glass, which provides a contrast to the etched photo. Let's talk about the steps needed to sandcarve a photo on glass. Following is a materials-needed list as well as the tutorial. MATERIALS You will need the following items: • Photoshop or Corel PHOTOPAINT graphic program • SR3000 3Mil Self-Stick film (or sim- ilar film) • Plastic squeegee • Black glass plaque • Abrasive – silicon carbide 150 grit is used for this project (aluminum oxide 150 grit-220 grit can be used) • Blasting pressure – 30 PSI TUTORIAL Step One: Convert the photo to a half- tone screen in Photoshop or Corel PHOTO- PAINT. Some adjustments may be required such as lightening dark areas and darkening light areas. Print the half-tone image as a negative and produce it on the SR3000 3Mil Self-Stick film. Step Two: Apply the photomask to a clean glass surface and squeegee well with pressure. Step Three: Peel away clear liner. If air bub- bles appear after the liner is removed, simply use your finger to roll out the air bubble. Do not rub as this can loosen the dot or pattern. Step Four: Apply tape to the exposed area. Painters tape was used to cover the exposed glass in this project. Step Five: Place the glass piece in your sand- carving system. Blast at a 90-degree angle using a side-to-side motion. The blasting distance is approximately 8" from the plaque. Once the first pass is complete, move the nozzle in a couple of inches, bringing it closer to the glass. For best results, blast a surface etch. Blast until a surface etch is achieved. A deep blast may result in the appearance that some of the resolution of the photo is lost. Note: Blast in slow, even strokes side to side then rotate the plaque and repeat blasting. Step Six: Once blasting is complete, remove the tape and photoresist film. Rinse off any abrasive or use glass cleaner and a plastic razor to remove the photoresist. Dry the glass with a lint cloth. Each month Awards & Engraving offers readers resources to enrich and expand their business with great products and services from our advertisers. Welcome to the PRODUCT HIGHLIGHTS section. Try This: Sandcarve a Photo on Glass By Liz Haas L i z H a a s h a s b e e n a teacher, trainer and show coordinator for Rayzist Photomask for the past 15 years. For the past 10 years, she has actively taught workshops on the photoresist and the sand- carving process. The finished product. Step one: Convert the photo to a half- tone screen. See text for full details. ALL IMAGES COURTESY LIZ HAAS Step six: Remove the tape and photoresist. A&E

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