Frames For Oil Paintings
The method of making joints for frames on which the canvas is stretched for oil paintings is shown at . They are generally mitred at the corners and fitted with loose wedges. The four parts of the frame can be held temporarily by a piece of thin board while the canvas is being tacked to the edges of the frame. In the accompanying illustrations shows the action of the wedges when tightening up the frame, the result being to open the mitre joint. shows the position of the saw cuts for receiving the hardwood wedges. Note that the parallel groove is carried the full length of the material for greater convenience in cutting. The other groove is taken from the outer angle of the mitre joint inwards. The cut finishes with due regard to the necessary taper; see the dotted lines showing taper in . The grooves will be wide enough after being cut with an ordinary hand-rip saw, but for large work they are usually grooved on the circular saw bench.
Joint and Method of Wedging the Frames of Oil Paintings.
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