A support is whatever material onto which the paint of an artwork, including the primer, is applied. For the last 500 years, the most commonly used materials have been wood and canvas. The first artists to develop the addition of drying oils to paint simply continued to make their habitual wood panels- in Italy using the easily available but rather unstable poplar, in Northern Europe using the heavier but more durable oak. As the Renaissance continued so did the demand for ever-larger works which had to be transported further afield. Obviously in these cases, wood was inconvenient and expensive. Generally speaking, a good support should have to some extent, three characteristics: 1 – Absorbency: it should microscopically draw in a slight amount of the liquid binder of the paint. 2- Tooth: it should have a slightly pitted surface which allows the binder, when dry, to lock into it. 3 – Stability: it should be subject to no more movement than, in a dried state, the paint it supports. The video above shows my oil paints on one standard canvas which was already primed by the manufacturer. The left side canvas was then also primed using my Non-Absorbent Acrylic Primer.
Now, what we can see towards the end of the video , is an oil outline around the paint (that slightly beige shadow) on the right side of the canvas – This is because the oil was sucked into the fibres of the canvas and out of the pigment suspension – Overnight this WILL result in the paint looking dull and flat, but long term you will find even bigger problems than that. . . Over the years to come, the oil that has been absorbed by the canvas material will begin to rot the canvas and your wonderful painting will suffer the consequences. The good news is that although it may add an extra step to your creative process, it will pay off to add an extra layer of primer to ANY support that you choose to use, pre-primed or not. My NAAP is ready to paint on within an hour of application. MH Oil Paints Non-Absorbent Acrylic primer will produce a strong, flexible, permanent, highly pigmented white ground. Suitable for as a ground for both acrylic and oil paint.