FIG 1: Showing the difference in OraMASK 813 and GAP Stencil Film. GAP is the white finish and 813 is the blue finish.
OraMASK 813OraMASK 813 is a low-tack, removable vinyl that can stick to any smooth surface. This film is great for water-based and latex paints. It has a blue opaque matte finish which is easy to weed and see your project’s background. OraMASK 813 is great for those craft wood signs from Pinterest and Esty. Wood and canvas are not the only substrates you can use this film on. It’s rigid enough to cover a large area, but flexible to conform to simple curves. You can use your cutter with the same settings you use for cutting regular vinyl. OraMASK is rigid while OraMASK 810S is thinner and more flexible. The 813 had no problem laying down on the wood sign, but when I tried to use the 810S, I could not get the film to stick. OraMask 813 is the better choice for this type of application.
FIG 2: Showing the OraMASK 810S, grey and the OraMASK 813, blue side by side. You can see the transparency and color different of the two.Orafol has two different types of 810, 810 and 810S. Both can be used for the similar applications. How do you know which one to use when? The S in 810S is for 'solvent'. It has a solvent-based adhesive which makes it more resistant to exposure to solvent-based paints and stains. 810S is a better choice for automotive and marine applications and not wood signs. OraMASK 813 has an acrylic or water-based adhesive that works well for most applications, but isn't as resistant to solvents and liquid in general. So it takes longer to bond on wet surfaces and can be weakened by exposure to solvent fumes. This could cause bleeding and a less than satisfactory image. OraMASK 810S has a matte gray, transparent face film. This film can also handle oven curing up to 300° F. This can be useful for when you are painting an object with paint that may need to be heated up or flashed. This application is common in stencil applications like vehicle graphics or decorative gun handles. Even when this film is heated up, it still pulls off easily and cleanly with no residue.
Spray MaskWe also sell a spray mask film that has some similar properties and advantages. It's an opaque, matte white matte calendared film. This product's advantage is heat resistance. It can be used in automotive paint mask applications that require baking the paint. The spray mask can handle temperature 200° to 300° F for short periods of time. It works fine with most vinyl cutters, but you'll get your best performance by slowing down your cutter speed, especially if you're cutting an intricate graphics. While I was working with this film, I wasn’t a big fan of how hard it was to see while weeding. OraMASK 813 is a blue film with a white release liner. It's the opposite of ORACAL's white vinyls, which all come on a blue release liner to you can clearly see what's been cut and what to weed. The spray mask is a white film on a white release liner, so it requires a little more attention to weed it correctly.
Getting StartedWhen you start a project, you may want to make a checklist to decided which stencil film is the best for your project. What type of paint are you using, what substrate (wood, canvas, glass, automobile, etc.) are you using? When it comes to substrates, the smoother, the better. The vinyl stencils will adhere to un-sanded wood and canvas, but the porous nature of the substrate means you may not have a good seal around the edge of the mask. That leads to a bit of a fuzzy edge. I had better results with a sanded wood sign than the canvas I used. Some people will coat their canvases with a modge pod or clear coat to make the surface smoother. This could be helpful but keep in mind that a coat like that can be glossy or change the finish of the project. Both of my paintings turned out great, but the edge is cleaner and crisper with a smooth wood surface. Here are the steps I followed for a wood sign. I did two of them, one sanded and one un-sanded. The sanded wood helped with the vinyl sticking and the cleaner edge of the lettering. You can go to your local hardware store to buy sandpaper and it's easy to do by hand.
Using the Stencil Film
FIG 3: A tip to lay down the stencil is to pull back half the liner and place. Once happy with the placement, pull rest of the liner off and squeegee.After sanding your wood, start by putting down a base coat. This can be a stain or a solid paint. I went with a grey acrylic base paint that I bought from a hobby store. Do not lay the stencil on the base till your paint is completely dry and done curing. Vinyl on uncured paint is a non-starter. This could cause issues with the film not sticking or could pull off paint during removal. When cutting your film, you want to make sure your mirror option is OFF. It’s a little step, but double check yourself and save a headache along with waste. Also, think about whether you want extra film or make it the exact size of your sign. I did both and I preferred the extra margin of error. Just a little hanging over the edge can help protect your sign from paint getting on the base coat. When you weed your film, you will reverse weed the text. This means you will weed away the letters instead of the negative space inside and around them. The stencil masks out what you want to paint. The sign is a decorative home sign with a Texas outline in purple paint. I weeded the letters and the Texas and left the rest. Once the sign is weeded, mask the film with a medium tack transfer tape. When applying the film, pull half the liner off and fold it. This will help line up the text on the substrate. Then I pulled the other half off and squeegee the film. While peeling back the transfer tape, hold a corner of the film to keep it down. This is where you'll see a big difference between sanded and un-sanded signs. Smoother substrates allow the stencil to bond more securely so that the tape can be removed easily. with rougher or more porous substrates, the stencil film doesn't have much to bond to, so it's harder to remove the transfer tape without the letters coming up with it. On my un-sanded version, the stencil film stuck to the tape, which caused a small tear on the 'M'. Now to the painting stage.