Mark Lakey of Art Warehouse, Chattanooga, Tenn., prints Sunset Reserve Bright Matte Canvas with a mirrored edge for a gallery wrap. Exploring the options and how to make your own inkjet canvas gallery and museum wraps from start to finish. Gallery and museum wraps are the most popular ways to finish inkjet canvas prints. They add value and artistic flair and bring the image out from the two-dimensional confines of frames and other flatmounted applications. Of course, you can apply canvas to a flat substrate as you would any other inkjetprintable medium, but here we’ll focus on gallery and museum wraps. First, and to be clear going forward, we’ll use the term “gallery wrap” to describe the basic concept of using a wooden frame to stretch the canvas over and around the frame for hanging it on a wall. A gallery wrap means that the image continues over the sides of the stretcher bars. This is usually accomplished by adding a 2 or 2 1/2 inch border by mirroring the main image, effectively adding a “bleed” area (a link to instructions and a video on how to do this are included on Page 6). A museum wrap, on the other hand, uses a solid border for the edges wrapped around the stretcher bars. 800-453-9538 • lexjet .com Page 1 Spray booth setup at Lizza Studios, Tunkhannock, Pa. Coating Canvas Many print shops prefer to add a protective coating after printing by either spraying or rolling it on the canvas. Typically, coatings come in either gloss or satin (luster) finishes. Gloss coatings are often used to not only provide additional protection, but to bring out the density of blacks and the vibrancy of the colors in the print. from other companies that specialize in fine-art and photo printing. Stick with sprays and coatings that are specially formulated for this application, rather than those that are not tested specifically for inkjet prints (Krylon, for example), because the long-term effects of these off-the-shelf sprays on inkjet paper surfaces are unknown. For a more subdued look and particularly to cut down the glare from high-powered lighting, a satin or luster coating may be preferred. Some will choose not to coat the canvas at all to retain the unique texture and characteristics of the material. However, if you don’t coat the canvas you should only apply it flat, i.e., mounted to Masonite or some other rigid substrate. When stretching aqueous inkjet canvas, always coat it to ensure the ink doesn’t crack when stretched. Liquid coatings that come in a can, such as LexJet Sunset Gloss and Satin Coatings, can be either rolled on or sprayed using an HVLP (high volume, low pressure) spray gun, which requires a well-ventilated dust-free area. Coatings are available in both spray and liquid (can). Sprays from Hahnemuhle and Clearstar Corp., for instance, provide excellent results, though there are other brands available 800-453-9538 • lexjet .com An HVLP spray gun wastes less coating in overspray than other types of sprayers. It also provides more control over the application process. But since most photographers and imaging companies don’t have room in their studios or shops for spraying (and can’t justify buying specialized coating systems), rolling is still a good option. Page 2 When rolling coatings on canvas, follow these basic steps: 1. Start with a high-density, white foam roller and a plastic tray that is typically used for holding paints. Never use a fiber roller. You can buy these products in the paint department of any home-improvement store. The highdensity foam will help reduce bubbles. Use a largerwidth roller if you plan to coat larger canvases. 2. Pour the coating into the tray and dip the roller in the coating until it is thoroughly wet, but not too wet. It helps to pour a light amount of coating evenly on the canvas itself, in addition to having coating on the roller. This helps eliminate potential problems with rolling onto a dry area of the canvas, which can lift or smear the ink. 3. Lay your print on a clean, dust-free board that is bigger than your print. The extra space on the surface around the print can be used to roll off excess liquid if you happen to oversaturate the roller. 4. Consider using two or three thinner coats, instead of one thicker coat. 5. Don’t try to coat the whole print at once. Start with one or two passes at the edge of the print, and go over each pass enough times for the bubbles to dissipate, but not so many times that the coating becomes tacky or bumpy. The primary function of the first layer is to displace the air in the surface of the coating. 6. If large bubbles appear, try blowing on the coating. 7. Make overlapping passes so you can maintain a wet edge and avoid lines and streaks. 8. Find the rolling pattern that works best for you. Some users prefer rolling in one direction only. They go up the print in one pass, and down the print in the second pass (like mowing a lawn). 9. Don’t press down on the roller. Maintain a light, even pressure. 10.If you are applying a second coat, allow the first coat to dry before applying the second coat. A thin coat should take about an hour to dry. It may take a little longer if you’re working in an environment with high humidity. If the first coat is just a bit tacky, rolling on the second coat while it’s tacky can peel off the first coat, along with some ink. 11.Allow the coated print to dry thoroughly. Don’t try to speed up the drying process with a fan; allow the print to dry on its own. 12.Clean the rollers immediately after each use. Run cool water over the rollers immediately after use, and squeeze them until they run clear. Allow 10 to 15 minutes. If you keep the rollers clean, you can use them for about six months before you need to replace them. Click here for a how-to video on coating canvas by hand with a roller. 800-453-9538 • lexjet .com Page 3 Large gallery wrap on Sunset Select Matte Canvas by Mark Andrews, Panorama Printers, Colorado Springs. A couple of important notes about coating canvas: • Make sure the ink is dry before applying any coatings. A good rule of thumb is 24 hours. To test whether a print is ready for coating, some printmakers suggest this technique: Lay each print on a flat surface, then cover the print with inexpensive butcher paper. The evaporating glycols will cause ripples to appear in the butcher paper. Periodically replace the wavy butcher paper with a fresh sheet of paper. If no waves appear in the fresh sheet of paper after a few hours, the print will be dry enough to coat. • Coat the print before stretching the canvas and wait at least six hours after applying the coating to stretch. • As more inks and media types are introduced, it is impractical to predict the compatibility of every combination of media, ink and clear coat. Therefore, it is strongly 800-453-9538 • lexjet .com recommended that you test before use. A test will immediately show any incompatibilities, including water sensitivity, inkjet receptive layer mud cracks and ink bleeds. Generally, let the tested material dry for at least 24 hours. Evaluate the adhesion, flexibility, and visual appearance. Be realistic in your expectations and simulate the conditions the material will be exposed to. Generally speaking, coatings formulated for wide format printing will work well with both aqueous and solvent prints. Some people use coatings to mitigate the perceived effect of optical brighteners, or OBAs, since the coating effectively seals the canvas and protects it from the degrading effects of UV light. For a more thorough discussion of the OBA topic, click here to read an article by Dr. Ray Work, To Brighten or Not to Brighten. Page 4 Canvas Wrap Options Typically, there are three ways a canvas print can be stretched – by hand, with a canvas stretching machine like the Tensador II or using a stretcher bar system like Sunset Stretcher Kits. Stretching canvas by hand can be very involved and timeconsuming. While efficient, using equipment like the Tensador II requires an initial investment upwards of $3,500. If your volume supports the equipment purchase, definitely investigate the Tensador II. If it doesn’t, Sunset Stretcher Kits are the happy medium between time and cost, helping to simply produce truly professional canvas wraps in less than 15 minutes. For detailed step-by-step instructions by master printer, photographer and craftsman Ralph Cooksey-Talbot on creating your own stretcher bars and canvas frames, including the tools and materials necessary, click here. While the raw materials needed to build your own canvas stretcher system are relatively inexpensive, the process is rather time consuming. 800-453-9538 • lexjet .com On the other extreme, and as mentioned above, is the use of an automated canvas stretching machine like the Tensador II. Companies producing higher volumes of canvas wraps find it to be indispensable. Armando Garcia, director of operations for Soicher Marin, a high-volume fine art reproduction company in Sarasota, Fla., says, “We use the Tensador for just about everything up to 60 inches. When you compare it to doing it by hand, the machine always wins out. I can’t think of a situation where we wouldn’t use the machine, unless it was an original canvas.” Garcia adds that it usually takes one of their operators about a day and a half to learn how to use the machine to its full potential and cuts the time needed to do a canvas wrap by anywhere from 30-50 percent. The third option is the use of a pre-made stretcher bar kit. While overall material costs are a little more than if you made the stretcher system by hand, each canvas wrap will take two to three times less time than doing it by hand. Also, when the image is wider than 60 inches, as they often are for panoramic images, stretcher kits allow for those larger sizes and any number of custom sizes that are beyond the bounds of an automated stretcher machine. Page 5 Here are the step-by-step instructions that show how quick and easy it is to use a pre-made stretcher system with LexJet Sunset Stretcher Kits. For videos of the process, including how to set up a file in Photoshop for printing a gallery wrap, click here. 1 This setting gives you a two-inch border all around the image. The border size will depend on the depth of the stretcher bars, so it may well be 2 1/2 inches instead. 2 Put the X on the back where the hole is located. 3 Draw the lines on all four corners. Print the canvas with a 2 or 2 1/2 inch border, or mirror the edge 2 or 2 1/2 inches on each side (the border size will depend on the depth of the stretcher bars, and you want at least 1/2 an inch extra to staple the canvas on the back of the stretcher bars). Coat the print surface as you normally do and wait to dry. Locate the corner of the print by using the supplied push pin. Pierce the corner of the print as shown. Then flip over the corner and draw a precise “X” through the hole. Do this for all four corners. Draw the lines. Turn over the entire print with the back showing. Using a ruler, draw lines as shown. Then, depending on the bar depth, draw a second set of lines either 1.5" or 1.75" in from the first set of lines. 800-453-9538 • lexjet .com Page 6 4 Place the stretcher bars down. Peel off the two sided tape and place the stretcher bars down as shown. Orient the bars with the slanted side toward the inside of the canvas print. To avoid fouling up the double-sided tape, tilt the bars inward until they are positioned correctly on and between the lines. Press the bars down firmly onto the canvas so the tape will adhere. 5 Trim the canvas as shown, then fold up the corners and stick them to the double sided tape inside the corner as shown. 6 Use a corner brace as a guide to cut the canvas. Stick the tabs to the tape. Fold up the sides and insert the corner clips. 800-453-9538 • lexjet .com Page 7 7 Remove the second set of double-sided tape and stick the canvas onto the double-sided tape. Be sure to tuck in the corners of the canvas very neatly. 8 Staple the canvas, placing a staple every 2 1/2 to 4 inches. 9 Insert the corner braces into the channels on the inside of each corner. Seat the corner braces by tapping them firmly into the corner. At this point the canvas will be fairly tight. Note: a gap will appear in the very corner about 1/16 to 1/8 of an inch or about the thickness of a credit card. This is normal and desirable. 800-453-9538 • lexjet .com Page 8 10 Screw in the eight screws which were provided. Do not over tighten and crack the stretcher bar. 11 Insert the back brace if one was provided. 12 Attach the hanging wire about 5 inches from the top. 800-453-9538 • lexjet .com Page 9
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