A canvas stretcher bar is something which is used for constructing a wooden stretcher frame. Stretcher bars are usually used by artists for mounting their canvasses. Traditionally canvas stretcher bars were used to be made like a wooden framework support used by an artists for fastening a piece of canvas. They are not only used for painting purposes like stretching of canvas but are sometime also used by small-scale embroidery to provide firm tension, affixing the fabric edges with push-pins or a staple gun before beginning to sew, and then removing it from the stretcher after the work is complete.
Usually Canvas stretcher bars are available in rectangular shapes. Certain other shaped canvasses are also available. Since stretcher bars are only frames they can be created in variety of shapes and sizes. The major difference in the creation of stretcher bars is in the construction of corners. The stretcher bars available at commercial levels are often pre-fabricated and are available in sections with interlocking corners.
Canvas stretcher bars can be created in home also there is nothing like it needs only skilled hands. You can build your own corner supports by applying simple woodworking techniques. The corner joint of stretcher bars are highly important while creating frames. Miter joints are the most popular method of affixing the corners of canvas stretcher bars other than Miter joints butt joints is also popularly used. The joints are inserted with keys or small triangles after the canvas is stretched and for giving the canvas its final tension.
Unlike other types of frames, the corner joints of a canvas stretcher bars are not glued or fastened permanently. This gives the scope to the canvas for future modification or change. Some commonly available stretcher bars, custom stretcher bars, aluminum stretcher bars and different other types of stretcher bars. Canvas stretcher bars are cut before and spliced for easy gathering. Nowadays canvas stretcher bars are commercially available of high quality and great durability.