Mitre Box Tips & Use
Mitre boxes are another simple and very convenient appliance, enabling the amateur to saw mitres with ease and accuracy. Its common form is shown in the picture, which is drawn in perspective so as to indicate its simple construction.
The mitre box is formed of a bottom and two side pieces of wood screwed together, as indicated. Across the top edges of the side pieces lines are scratched with the marking-point and the try-square, at a distance apart exactly equal to the outside width of the box; and between the outer points of these lines diagonal lines are marked in the manner indicated by the dotted lines in the illustration.
The setting-out is completed by carrying down, from the same outside points, vertical lines on the outside faces of the side pieces. When all the lines have been accurately marked, clean cuts have to be made with the tenon-saw along the diagonal and vertical lines, and across the box. These cuts, which are shown by solid black lines in the illustration, subsequently serve as guides for the saw in cutting a mitre end on any piece of wood laid in the box and held firmly against its off side. The cross cuts are required for the production of right and left mitres. The vertical cuts, shown near the end of the mitre box, are guides for the saw in cutting die-square ends,
Mitre Shooting Board
This is a necessary adjunct to the mitre box, being used to accurately dress the ends of the pieces cut by the saw in the mitre-box. A convenient form of this is shown in the picture below, and so clearly as to require no detailed description. It is constructed on the same lines as already described in connection with the straight shooting-board, the only difference being that in the mitre shooting board there are two stops, set at the angle of 450 to the shooting edge. This board need not be above two feet in length.
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