Water-mixable oil paint auxiliaries

All surfaces that are free of grease and are somewhat absorbent, such as paper, cardboard, cotton, linen and wood, can be prepared with Gesso. With an open woven canvas, it is recommended to apply a layer of Amsterdam acrylic binder first. This seals the meshes of the canvas so that the Gesso does not come through at the back.

Yes, the oxygen absorption and thus the ageing process is slowed down by a final varnish. At the same time, the final gloss level is determined and the paint is protected against atmospheric contamination. Cobra water-thinnable oil paint dries like traditional oil paint through the absorption of oxygen, a chemical process. After the paint is completely dry, this oxidation process will not stop and an ageing process takes effect. Eventually, this can become visible as crackling. After the paint is completely dry (with normal layer thickness about one year, with very thin layers several months earlier, with thicker layers several years) it is therefore advisable to apply a final varnish. Oxygen absorption, and thus the ageing process, is slowed down by the varnish layer.

Cobra painting paste is a colourless and water mixable medium.