The stretcher bar that is used to construct a wooden stretcher frame has come a long way and is still evolving. Used by the artist to mount his/her canvas, today it is a framework on which the artist fastens the canvas for painting. However, these frames are also used for embroidery by the small-scale industry. The frame provides a steady tension while the fabric is affixed with the help of either pins or the staple gun before sewing commences. The stretcher bars have to be strong and supple so that these can take the load at the time of stretching.
The wood has to be of high quality so that the bar does not warp or bend under the constant load of the canvas. Ultimately, the stretchers support your precious canvas. Therefore, these must also be beautiful to look at besides being durable and not be unduly prone to harmful effects from humidity, heat or cold. When the canvas is being fastened, even pressure has to be applied so that warping is minimized. Canvas bar may sag or stretch over a period of time and therefore it may need to be tensioned again. The profiles on the stretchers need to be rounded so that the canvas rolls over smoothly rather than abruptly and thereby causing the canvas to crack. These warehouses will also give you a choice from as many as five different styles for you to order from.
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