Posts Tagged ‘Oil Painting’

Tips on Oil Painting – Solvents Mediums and Varnishes



If you paint with oils you will need a solvent to clean your brushes and thin your paints. Of course, if you paint with water soluble oils then your solvent will be water.

Turpentine is a standard solvent used to thin ordinary oil paints. You can purchase turpentine in any art supply store or hardware store. In some cases, the kind of turpentine you buy in a hardware store may be fresher because of the shorter turnaround time.

Some artists work with mineral spirits. These are also available in hardware stores. To save money, buy the largest available quantity and use a smaller container when you do your actual painting.

Tube oil paint (i.e., oil paint directly from the tube) can be difficult to manipulate. Some colors are stiffer than others and may be hard to evenly distribute over your canvas. To solve this problem, artists often need to mix their tube paints with a so-called painting medium.

A painting medium is a liquid solution that makes the oil paint smoother and easier to manipulate. Adding any one of a number of different painting mediums changes the consistency of the paint. Some mediums are meant to make the paint thinner for glazing and others are meant to make the paint thicker for impasto painting. There are also mediums to shorten or lengthen the drying.

 

The most basic medium is regular turpentine. Adding a little turpentine thins oils paint. Another frequently used medium is linseed oil, which makes the paint more fluid but, over time, it also tends to yellow the paint. The most commonly used medium is a combination of turpentine and linseed oil, sometimes with the addition of a little damar varnish.

Begin by experimenting with a half-and-half mixture of turpentine and linseed oil. Because linseed oil slows down the drying process, you may want to increase the proportion of turpentine. A good mixture is three parts of turpentine to one part of linseed oil.

Once you find the medium you like, mix a batch and store it in a tightly sealed jar. As you paint, dip your brush into the medium, then add a little paint, then mix them together on your palette (mixing surface).

Preliminary compositions can be drawn on your canvas with a so-called thin turp wash, i.e., a little bit of paint with a lot of turpentine. A turp wash evaporates very quickly, so you can quickly paint over them.

In general, the more turpentine you use the matter the finish will be and the more linseed oil you use the glossier it will be. If you like robust, permanently visible brushstrokes, you may want to use less medium. Dry brush is one technique where you do not add any medium at all.

Special painting mediums are also available that change the oil paint in different ways. The most common are those that shorten or lengthen the drying time of the oil paint. Check your art supply store or the Internet to see the available types of mediums. All medium bottles will show instructions on how best to use the particular medium.

Oil paintings must be varnished to protect them from undesirable elements such as dirt and toxins. Varnish is a clear solution made from a resin and turpentine or some other solvent.

In art-supply stores you will see two major types, retouching varnish and picture varnish. Depending on the paint layer thickness, it can take six months or more for an oil painting to dry. In the meantime, the surface of the painting needs to be protected with a coat of retouching varnish. After the varnish is applied, the turpentine evaporates, and leaving a thin protective coat. You can apply retouching varnish as soon as the paint feels dry to the touch.

 

Picture varnish contains more resin than retouching varnish. It should be applied about six months after you complete a painting. If you paint with impasto-like brushstrokes, you may have to wait as long as a year before applying the final coat.

 

Both types of varnish are applied in the same manner. Using a broad, flat nylon brush, apply the varnish evenly using horizontal strokes. You can also use retouching varnish to brighten dry dull patches in your painting.

How to Paint a Beautiful Landscape – Learning to Paint



Painting landscapes with acrylics is both relaxing and rewarding.  Let your personal style come through and you should find this a great hobby. Acrylic paint is a medium that can look like an oil painting or a watercolor painting when finished.  It depends on the artists’ style and how thick they apply the color.  Either way, starting out by painting landscapes helps to get your feet wet in the world of painting.

You can learn to paint a landscape on canvas paper, canvas board or stretched canvas.  I always suggest practicing your techniques first on an inexpensive canvas or acrylic paper.  I am a sort of perfectionist with my art, and tend to become frustrated easily.  By practicing first, then applying it to the finished piece I feel more comfortable.  You may be satisfied without practicing.  Painting is about what makes you feel good! 

Keep your supplies handy.  Have your spay or mister bottle handy to keep the acrylics moist, keep a water supply handy for the brushes, and always have paper towels handy.  

Let’s create a simple landscape painting.  Lightly sketch in a horizon line with pencil about ¾ of the way down the canvas.  In this case out emphasis will be the sky because only ¼ of the painting is land.

 Wet the sky with white gesso.   Add some color to the same brush and starting at the top, use criss-cross strokes and blend down to the horizon line.  Use any color.  Daytime skies can be blues & purple.  Nighttime skies can be these colors just darkened with reds and oranges near the horizon.  Blend the colors as little or much as you like.  Now your sky is done. 

Now it’s time to create your land or hills.  Chose a medium to light green and with horizontal strokes lay in the distant field or hill.  Keep things interesting by sloping it.  Change the green slightly by darkening it and add a couple of more layers of fields as you work your way forward.  The darkest layer should be in the front of the painting. 

That’s it!  Anything else you add to your painting is a plus.  One or two distant trees would be neat or maybe just a single bird in the sky, low to the horizon. 

I hope this little lesson helps inspire you to have fun painting landscapes with acrylics.