HW 4/11/13 Jennifer Moya

1) The binder used in watercolor and gouache is gum arabic. Acrylic paint uses acrylic as its binder
2) You thin watercolors with water, gouache and acrylic can be thinned out by water also.
3) Water color should be used on watercolor paper. Gouache can also be used on watercolor paper.
4) Acrylics can be used on a large variety of supports, including canvas, paper, wood, degreased leather, brickwork, or anything which is neither greasy nor too glossy.
5.) The best brushes for watercolors and gouache is synthetic watercolor brushes. Synthetic brushes are also good for acrylic painting.
6.) Watercolor-The most basic watercolor technique is the flat wash. It is produced by first wetting the area of paper to be covered by the wash, then mixing sufficient pigment to easily fill the entire area. The pigment is applied to a sloping surface in slightly overlapping horizontal bands from the top down. Once complete the wash should be left to dry and even itself out - don't be tempted to work back into a drying wash, the results are usually disastrous!
A variation on the basic wash is the graded wash. This technique requires the pigment to be diluted slightly with more water for each horizontal stroke. The result is a wash that fades out gradually and evenly
Gouache-Gouache paint is designed to be applied fairly thickly; diluted with too much water and they can 'powder off'; applied in too many thick layers and they have a tendency to crack.
The cracking is due to the under layers, absorbing the water and Gum Arabic out of the newly applied paint, but it only become apparent when dry.
'Less layers are best layers' with Gouache!
I especially like them for small and detailed paintings, give them a try, they can be very rewarding.
The cracking is due to the under layers, absorbing the water and Gum Arabic out of the newly applied paint, but it only become apparent when dry.
'Less layers are best layers' with Gouache!
I especially like them for small and detailed paintings, give them a try, they can be very rewarding.
Acrylic-Since acrylic paints function like glue and dry rapidly, they can be mixed with other materials, like sand, sawdust,or simply combined with a medium and the result can be used for creating textures. The additions to the paint lets you form various surfaces.
You can choose from a wide range of modeling pastes or gels that contain sand, marble, or alabaster dust. You use modeling pastes on a hard surface before you start to paint (so it will not crack). You can apply the paste with a spatula and form straight or wavy lines. You can also comb the surface.