This especially involves straight and square planing. Cut from Deal a piece 20 in. long, 61⁄2 in. wide, and 1 in. thick. Plane one side perfectly level and one edge perfectly straight at right angles. Gauge and mark for width at 53⁄4 in. Find and mark the centre line A to B in Fig. 1 of [drawings No. 18]. Set the compasses to a radius from A to B, and describe, with A for the centre, the semicircle shown at the top of the Fig. Fit a 1-in. Centre-bit to the Brace, and drill a hole with A for the centre, taking care that it goes vertically through at right angles, and that there is no splitting when the bit is nearly through. With the small turning saw, cut round the semicircle at right angles, and, with the chisel, shave off and round the two corners that spring from the semicircle, also at right angles. Then, measuring from the centre of the rounded end at B, mark the entire length at 167⁄8 in., and, with the tenon saw, cut off at the mark at right angles. Then shave and round at right angles the two bottom corners. Plane the bottom edge smooth, and file the edges where necessary. Set the gauge at 3⁄4 in., mark with it the edge all round for thickness, and plane the rough side down to the mark, perfectly level throughout. Then, with the smoothing plane, take a thin shaving from the first side, merely enough to remove the marks, taking care to maintain an accurate level. Finish throughout with sand-paper.
*** The object of deferring the planing of the second side until so late a period, is that, at the same time, minute chipping and roughness of edge on that side, almost certain to result from the boring and sawing, are at the same time disposed of.
No. 19. Half-Yard Measure.
(In the original Sloyd model this is a half-metre measure.)
(Requiring [Exercises] 5, 7, 12, 8, 9, 10, 25, 30, 15, 16, 6, 2, 13, and 24.)
Select from Beech an exceptionally straight-grained piece 24 in. long, 11⁄4 in. wide, and 3⁄4 in. thick. Plane one side and one edge at right angles, both scrupulously straight and even; then gauge, mark to a nicety for 11⁄8 in. wide and 1⁄2 in. thick, and plane to the gauge marks with great exactitude, thus producing a four-cornered rod of uniform size throughout. Saw across one end at right angles. Measure from that cut end, mark the length of 18 in., and saw across at the mark. Then set the gauge precisely at 7⁄8 in., and, passing it along each edge, mark on both sides for the lines a to b in Fig. 1 of [drawings No. 19], continuing the lines from end to end of the entire rod. Then, with the square, mark across the place for a a, and there saw a slit on each side down to the gauge line. Then proceed to the first exercise in Obstacle Planing (No. 25.) Thus, pass the smooth plane along each edge from b to a, as far as the obstacle of the corner will allow. Of course the planing cannot be continued into the corners, but, whatever is left by the plane must be got out by the chisel and file. Then, on each side, sketch for the handle, as shown in Fig. 1, the gauge line, previously there, forming part of the sketch. Then, with the turning-saw, cut out to the sketch and gauge lines. With the knife, make the chamfers shown in Figs. 1 and 2. Then shave the corners and round the end of the handle, as shown in Fig. 1. File and scrape lightly where required, and finish with sand-paper.