artiarThere are several materials that can be utilised as a support, but the pet portrait artist needs to deliberate the merits of the material used, so that it will provide the best longevity for their painting. Much will depend on the type of paint being used, oil and acrylic tend to be a more flexible medium so can be applied with reasonable confidence on fabrics that have been properly prepared. More brittle mediums such as tempera, gouache or pastel, require a more rigid support such as prepared boards. Even so, no support is everlasting and all are affected by atmospheric and chemical changes over time, the craft of the artist is to make sure they use the correct support for the medium they use and if done correctly can create a picture that will last for thousands of years.
Below is a brief description of the different types of support for painting.
Processed wood
From the selection of processed woods now on sale, probably the best support for the artist, is MDF (Medium Density Fibre Board). This is stronger and more stable than other processed woods and so is less likely to warp. The surface is quite smooth though does take ground preparations well.
Natural Wood
Natural wood has been used for centuries in painting, but it does have to be well seasoned. Suitable examples will show straight close growth rings which where possible are aligned across its thickness. Wood with knots and sap wood should be avoided. As a general rule hardwood make a better support than softwoods
Linen
Linen is the best fabric for painting, it is a strong, long-lasting material that, if well made, offers a relatively flawless surface with a fine weave.
Cotton
Cotton is cheaper than linen and much more available to the artist, however it doesn’t have the longevity of linen. The better cloths are heavy (10oz or more) have a close weave and few stubs or knots.
Paper and card
Paper is an ancient product that has it’s origins in China. It is made from vegetable fibres matted together to form a sheet. Western paper was originally formed from linen waste (known as rags) but when cotton came into general use, cotton rags came into use. If made with care using the best materials, paper can last a long time, but tends to be fragile. In painting it is tends to be used as a ground for water colour, gouache, tempera, pastel and acrylics. Though, if heavily sized, can be used for oil colours. For paper to stand the test of time it must be acid-free.
Stone
A few types of stone have been tried and tested as painting supports. Some fine examples have survived from the renaissance. Slate is an obvious choice as it comes in sheet form, but other materials such as marble and onyx may provide more interesting backgrounds that can also be utilised. Non-absorbant surfaces do not need preparation, though it is advisable to wipe down with white spirit before starting.
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