
Alcohol inks work best on non-porous surfaces such as glass, plastics, metals, and varnished wood. When using alcohol ink on canvas, it is important to prime the canvas to make it non-porous, otherwise, the ink will bleed through. There are several ways to prime a canvas for alcohol ink, including using a gel medium, a gloss medium, or a latex-based paint primer. Some artists recommend using a foam brush to apply the primer to create a smooth surface and avoid brush strokes. After priming, it is important to let the canvas dry completely before beginning to paint with alcohol ink. Additionally, artists should consider using a sealant or UV varnish to protect their artwork from fading over time.
| Characteristics | Values |
|---|---|
| Primer | KILZ 2® LATEX, Gel medium, Gloss medium, Gesso, Nippon Latex Interior Primer, Dulux Golden Ultra Interior Primer, Asian Paints Ultima Protek, Krylon Kamar Varnish |
| Primer colour | White or clear |
| Primer application | Foam brush, paintbrush, soft brush |
| Primer drying time | 30-45 minutes |
| Canvas placement | On risers |
| Canvas surface | Level |
| Protective layer | UV spray, UV gloss varnish |
| Artwork preservation | Keep away from direct sunlight or bright light, scan or photograph the artwork |
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What You'll Learn

Using a primer to make the canvas non-porous
Priming a canvas is the process of creating a barrier between the canvas and the paint. This makes the canvas less absorbent, helping the paint sit better on the surface and protecting the canvas from natural corrosion. Priming gives you an even ground to work on, making it easier for your brush to flow and reducing the amount of paint you need to use.
When it comes to using a primer to make a canvas non-porous, there are several options available. One option is to use an oil-based primer. Oil primers are effective in creating a non-porous surface, but they can take a long time to dry. To speed up the drying process, you can condition the paint with a medium of linseed oil and turpentine. While turpentine has an objectionable smell, it only needs to be used for the primer. It acts as a catalyst for the linseed oil, helping it to polymerize better than most other solvents.
Another option is to use an acrylic primer. Acrylic primers are faster-drying than oil primers, but they may not be as effective in creating a non-porous surface. To make acrylic primers less absorbent, you can add a small amount of matte medium to the primer. You can also apply a final layer of matte acrylic material over glossy acrylics before painting with oils. It is recommended to wait at least 24 hours, or even up to three days, before painting with oils over a newly applied acrylic surface.
There are also specific primers designed for use with oil paints, such as Winsor & Newton's ready-to-use oil painting primer, that can be used on porous surfaces with minimal sinking. These primers can also be tinted by mixing a small amount of oil colour into them. However, it's important to note that the canvas needs to be sized before applying an oil painting primer. Sizing is the method of sealing the surface and creating a barrier layer between the canvas and the primer and paint layers.
Additionally, there are certain products designed to make a canvas non-porous, such as KILZ 2® LATEX, a fast-drying, water-based, multi-purpose primer, sealer, and stain-blocker. It is recommended to use a foam brush to apply the primer, as it helps to avoid noticeable brush strokes. After applying the first coat, you can run over it with a clean and dry foam brush to ensure a smooth surface.
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Applying a sealant that won't reactivate the inks
Sealing your alcohol ink pieces is an important step to protect them for years to come, especially if you plan on selling or giving away your artwork. The sealing process requires the same precautions as creating the artwork itself—for example, ensuring you are working in a properly ventilated area.
When it comes to choosing a sealant, it is essential to select one that will not reactivate the inks. Many UV varnishes and protectants contain isopropyl or acetone, which can cause the inks to activate and move. To avoid this, you can use a sealant with a low alcohol content. Golden products, for instance, typically have a 91%+ alcohol content, which is high enough to activate alcohol inks. Therefore, a varnish with a lower alcohol content, such as a UV varnish with less than 70% alcohol content, may be suitable.
One of the most recommended sealants for alcohol ink projects is Krylon Kamar Varnish, a spray-on product that is easy to use. This sealant has a low enough alcohol content that it won't reactivate the inks. After applying the Kamar varnish, you can spray UV protection on top to prevent fading.
Another option for a sealant is KILZ 2® LATEX, a fast-drying, water-based, multi-purpose primer, sealer, and stain blocker. This product can be used to seal porous surfaces, such as a canvas, to create a non-porous surface suitable for alcohol inks. When using this product, it is recommended to use a foam brush to avoid noticeable brush strokes.
It is important to note that some artists choose to skip the use of Kamar varnish and UV protection altogether when using Art Resin®, as they believe it provides sufficient protection.
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Using a foam brush to avoid brush strokes
When priming a canvas for alcohol ink in Australia, using a foam brush can help you avoid brush strokes. Foam brushes are ideal for achieving a smooth finish without visible brush strokes, making them perfect for varnishes and stains. They are also lightweight, cost-effective, and don't leave behind stray bristles.
To prime your canvas effectively and avoid brush strokes, follow these steps:
- Choose a high-quality foam brush of an appropriate size for your canvas. Wider foam brushes can help cover larger areas more efficiently.
- Apply the first coat of primer, using smooth and steady strokes. Avoid overworking a specific area, as this can lead to noticeable brush marks.
- After applying the first coat, use a clean and dry foam brush to go over the surface again. This helps ensure a completely smooth finish with minimal brush marks.
- Ensure that the primer is completely dry before applying a second coat, if necessary.
Foam brushes are typically single-use, so it is important to choose affordable options sold in bulk. They may not be suitable for oil-based paints as the oils can degrade the foam. Additionally, they may struggle on uneven or textured surfaces.
By following these steps and choosing the right tools, you can effectively use a foam brush to prime your canvas for alcohol ink while minimising brush strokes.
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Allowing the primer to dry before painting
When priming a canvas, it is recommended to wait at least 24 hours before beginning to paint. This will ensure that the primer is completely dry and will result in a smoother surface for your paint to adhere to. A smoother surface will make it easier for your brush strokes to flow and will also help your paint sit better on the canvas.
It is important to note that the drying time may vary depending on the type of primer used and the number of coats applied. For example, when using KILZ 2® LATEX, a fast-drying, water-based primer, it is recommended to let the primer sit for about 30 to 45 minutes before painting. On the other hand, when using an oil-based primer, the drying time may be longer, and it is suggested to wait at least 24 hours.
To speed up the drying process, you can use a hairdryer or fan to direct air towards the primed canvas. Additionally, ensuring adequate ventilation in the room can also help reduce the drying time. However, it is important to avoid touching or applying paint to the canvas until it is completely dry to the touch.
By allowing the primer to dry thoroughly, you will create a smooth and even surface that will enhance the overall quality and longevity of your painting. This step may seem time-consuming, but it is essential to ensure the best results for your artwork.
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Varnishing the artwork to prevent fading
Varnishing is an essential step in protecting your artwork from fading. It helps seal the surface of the painting, creating a non-porous barrier that prevents dust, dirt, and environmental factors from damaging the canvas. Here are some detailed instructions on varnishing your artwork to prevent fading:
First, it is important to allow your painting to dry completely before applying varnish. The drying time will vary depending on the medium and thickness of your artwork, but it is crucial to be patient and ensure that the paint is no longer wet.
Next, prepare your workspace. Place your canvas on a flat, horizontal surface. Ensure the area is clean and well-ventilated. Have your varnish, varnish brush, and any other necessary tools ready. It is recommended to use a broad, flat brush specifically designed for varnishing.
Now, you can begin applying the varnish. Start by dipping your brush into the varnish container, ensuring it is well-coated but not dripping. Begin brushing the varnish onto the canvas, moving your brush in parallel strokes. Apply the varnish evenly and smoothly across the entire surface of the canvas, ensuring you cover all areas.
After you have finished the first coat, let the varnish dry. Depending on the type of varnish and environmental conditions, this may take around 15 minutes to an hour. Once the first coat is dry to the touch, you can apply a second coat if desired. For the second coat, brush the varnish at a right angle to the first coat. This cross-hatch pattern ensures even coverage and a smooth finish.
Finally, allow the varnish to dry completely. This may take several hours or even overnight. Do not touch the surface or disturb the canvas during this time. Once the varnish is fully cured, your artwork will be protected from fading and ready for display or storage.
Remember, while varnishing is an important step in preserving your artwork, it is not the only factor. Proper framing, storage, and handling are also crucial in preventing fading and ensuring the longevity of your artwork.
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