Home instruction for sheet metal workers . Pa-H-ern -for OneSide Fig. 534. Details and Gore Patterns for 10 Inch Ball. ping the other half over same with a butt edge, then scrapingsmooth, as in Fig. 533, which shows the finished ball with seam 370 Home Instruction for Sheet Metal Workers. A which joins the two halves. Another method of making a balladapted to larger sizes will next be given. Sometimes a ball is made in vertical sections or gores, andwhile this method takes more time in raising, it saves material,especially if large balls are to be constructed from sheet an example of
Home instruction for sheet metal workers . Pa-H-ern -for OneSide Fig. 534. Details and Gore Patterns for 10 Inch Ball. ping the other half over same with a butt edge, then scrapingsmooth, as in Fig. 533, which shows the finished ball with seam 370 Home Instruction for Sheet Metal Workers. A which joins the two halves. Another method of making a balladapted to larger sizes will next be given. Sometimes a ball is made in vertical sections or gores, andwhile this method takes more time in raising, it saves material,especially if large balls are to be constructed from sheet an example of this method of construction, which the homestudent should practice. The detail of developing a ball of this kind is shown quarter size inFig. 534. First drawany center line as A Bupon which establish atpleasure the center pointC. Set the compasses toa 5-in. radius, and, using Fig. 535. Gores Laid to Avoid Fig. 536. Raising to ° Waste Conform to stay. q as center, describe the circle, which represents the elevation of the ball. ThroughC draw the diameter D E. Below the elevation, with any pointF, on the line A B, as center, with the same 5-in. radius, describethe circle, which represents the plan view of the ball. In thiscase the ball is to have eight gore pieces, although any nu
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1922
