Sunday, March 25, 2012

How To Stretch a Canvas for Painting

There are several options for an artist today. Pre-stretched canvases are available in many sizes in most art supply stores. But there are times when an artist may wish to stretch their own canvases.

Begin with the frame. Some artists like to use precut frame lengths that have a fitting tongue on each end. You will need two pairs of wood (four pieces) per frame. For a 16 x 20 frame, for example, you will need two 16" lengths and two 20" lengths. Fit one corner together of a long and short length and tap together with a mallet. Proceed with the other pieces alternating long and short. Use a T-square or a Right-angle triangle to make sure you have hammered together a rectangle and not a trapezoid. If your frame is not in alignment, gently squeeze the two corners furthest away from each other until they are square.

To make a frame using uncut wood lengths you will need a wood saw and a miter box, or a chop miter saw. You will also want a heavy duty staple gun or V type nails made specifically for joining together two pieces of wood. You will be cutting two pairs of wood lengths. All eight ends will be cut at a 45 degree angle with the miter equipment. The longest edge of each piece will form the outer dimensions of your frame. After you have cut your pieces, put together a long and a short length and join with one staple or joining nail. Check that you have a right angle. If desired, you can clamp the wood pieces to a right angle (such as a block of wood) to assist you while you join it. Proceed with the other corners, and give a final check for right angles.

You are now ready to stretch the canvas over your frame. You will need a light weight staple gun or tacks and a hammer, and artist grade canvas. Cut your canvas in a rectangle with an extra 2" or more on all sides of the frame, enough to pull the canvass around to the back of the frame. Place the canvas on the floor or table face down with the frame centered on it. Pull up one side of the canvas and attach with one staple or tack only, in the middle of that side on the back. Now gently pull the opposite side, and pulling so that there is no slack but it is not stretched tight, attach that canvas to the middle of the back.

Now go to the sides that are not yet done. Take one side and gently pull it to the middle of the back and attach. Avoid puckering the canvas. Take the middle of the fourth side and pull so that the canvas is like the top of a drum. You want neither too tight nor too loose. After this side is attached, start adding one staple or tack to each side, about 1 - 2 inches apart, continuing in a circle around the sides. Work your way towards the corners from the middles of each side. When you get close to the corners, neatly fold the corner. This is done much like "a hospital corner" on a bed sheet. Secure corners and your canvas is now ready for priming and painting.

Article Source: http://EzineArticles.com/777120

Understanding Space in Painting - Pictorial Space

Space is an essential knowledge in the understanding of design. Human beings live in space but a picture comprises only of a 'flat surface' with no actual space. It would be foolish to disregard this 'flat surface' as something insignificant in the context of Art. In fact this ' flat surface' can be transformed into what is known as 'pictorial space'. Pictorial space is a virtual space created by the artist in which the viewer is able to orientate himself to the art work.

This is no different from the space that architects and designers work with. Space is the first creative act of any drawing or painting scrawled on a piece of paper. Like an architect, a painter needs to determine before hand the manner in which the space can be depicted.

The way in which space is created tells us a lot about the painter' s style and technique. There are several ways in which pictorial space can be composed.

1) Flat v.s Deep

Flat surface works are pretty much decorative while the invention of light, shade and shadow give art a whole new dimension.

2) Overlap

Overlapping image gives us an idea of what is front and what is at the back

3) Diminishing Sizes

The contrast in size of similar object such as a rock will suggest that the smaller piece is further away from the larger one

4) Planes

The movement of planes and the relationship of one plane to another create a powerful 'push' or 'pull' effect in which depth is instantly recognized.

5) Positive and Negative space

Within a composition, an expert artist is able to plan and handle positive and negative space effectively

Article Source: http://EzineArticles.com/746498

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