|Pigment Stick Grounds|
What is a Ground?
The term "ground" refers to the actual surface to which paint is applied. This layer is usually applied after the support has been sized. This process is also known as "priming." The application of a ground can be beneficial for a painting for a few reasons.
Applying a Ground
First, the application of a ground offers a foundation of uniform absorbency. Most supports are unevenly absorbent even after proper application of a size. This will affect the appearance and stability of the paint film and the painting will have areas of matte and glossy finishes. "Chalking" of the dried paint film can also occur if the support is too absorbent.
Grounds offer a white, non-yellowing layer that will afford the painting maximum luminosity. Furthermore, oil paints become more transparent as they age and will show an increasing amount of what is underneath the paint film. Since some sizes and supports can yellow or darken with age, and thus affect the color of the aging painting, priming will help preserve the brightness of the paint.
The application of a ground is also a structural element. This will give sufficient "tooth" for all subsequent layers of paint to adhere to. This foundation will ensure that a good mechanical bond occurs between the support and the paint. Also, if the support deteriorates over time, an isolated paint film can be stabilized more easily. Paintings done directly on the support are much more difficult to repair.
Types of Grounds For Pigment sticks
Grounds can be separated into two different categories, absorbent and non-absorbent.
Properties of absorbent grounds are:
Examples of absorbent grounds are:
Properties of non-absorbent grounds are:
Examples of nonabsorbent grounds are:
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