Basic Knowledge Required To Start Oil Painting
OIL PAINTIN OVERVIEW
What is Oil Paint? Oil paint is a type of slow-drying paint that consists of particles of pigment suspended in a drying oil, commonly linseed oil. The viscosity of the paint may be modified by the addition of a solvent such as turpentine or white spirit, and varnish may be added to increase the glossiness of the dried oil paint film.
Oil Paints comes in tubes and can be mixed on a palette with palette knife to get another colour, it can then be applied to a surface or space using stiff brushes. Oil Paints can be used on Canvas, Panel, Board or any other suitable surface.
Oil Paints provides room for modification due to its slow drying time. It dries through oxidation and this may take up to three days, the slow drying time has its advantage and disadvantage, the advantage is that it gives room for modifications like, cleaning, blending, and adjusting expecially when making gradual transition from one colour to another. It can be cleaned with rag, palette knife, or any other suitable materials.
The disadvantage of oil paint slow drying time is that colours can smear into each other if not apllied appropriately.
Oil Paint can carry many layers of application, you just have to let one colour dry for at least three days before applying another. Modification can be made sevral times on a layer before applying another. New layer must be thicker than the previous layer to avoid the painting from cracking after drying.
DRAWING: A complex drawing is quickly lost when the oil colors go on, so simple shapes and contour lines make the“ best drawings for oil paintings.
The drawing may be made directly on the canvas or it can be prepared before and transferred to the canvas.
When drawing directly on the canvas, PAINT that has been thinned with thinner is the best. Because it is paint, it doesn’t need to be isolated from subsequent colors.
CHARCOAL can be used for drawing on the canvas. The charcoal drawing must be isolated from the paint layers with FIXATIVE. Vine charcoal is easier to seal with fixative than compressed charcoal.
The drawing can be made with a PENCIL on the canvas. This must be sealed with FIXATIVE before the colors go on. A pencil’s point (if pushed too hard) can make small cracks in the gesso so a thin transparent layer of gesso may need to be applied to re-seal the canvas. If gesso is used in this way the fixative is not necessary.
A drawing that is going to be TRANSFERRED to a canvas is best done on thin tracing paper because the transfer will be clearer. Tape the drawing to the canvas. Transfer the drawing using carbon paper. Draw over your drawing with the carbon paper beneath it. Use a contrasting color ballpoint pen so you can see where you’ve already drawn and to get a consistent line size. The carbon transfer should also be separated from the paint layer with fixative or a thin transparent layer of gesso.
BLEND: A blend is the gradual transition from one color to another. Oil paint, because it takes time to dry, allows you to move the wet paint around on the canvas. This makes it easy to do the thing most difficult to do with other types of paint, the blend. All brushes will blend oil paint. Flat brushes are best and rounds the worst. The principles are the same for large and small blends.The colors are mixed on the palette and applied in their approximate location on the canvas. The brush is then dragged back and forth in a crosshatch stroke between two values until a satisfactory transition is made. Parallel strokes are then used to refine the transition of values. A clean brush is used for the dark to middle and another clean brush for the light to middle.
(A) In a blend the brush strokes are ALWAYS perpendicular to the light. In a circular blend the brush must rotate to remain perpendicular to the light so curved brush strokes are used.
(B) The placement and size of value shapes within a blend create the contour of the surface. Note the value placements for flat surfaces on the left and curved surfaces on the right.
MATCHING COLOURS: A rainbow gives us pure examples of the basic colors of the visible world. The rainbow’s colors are, in order, red-violet, red, red-orange, orange, yellow-orange, yellow, yellow-green, green, blue-green, blue-violet and violet. When this order of colors is formed into a circle we have the COLOR WHEEL. The color wheel is an essential tool for matching colors.