Page:Sheet Metal Drafting.djvu/135

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SECTIONS FORMED BY CUTTING PLANES
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parallel to the base line 1-5 across the elevation of the cone, Fig. 165, from each intersection of the developed miter line. These lines intersect the side or slant height of the cone at five different points. With the apex as a center, arcs are carried from each of these points over into the stretchout. Starting with point 1 of

Figs. 164-170.—Sprinkling can.

the half-profile, the extension line is traced to the base of the cone, thence to the developed miter line, and from this point to the correspondingly numbered lines of the stretchout. In like manner the remaining intersections may be traced. A curved line passing through these points will give the miter cut of the pattern. An