. Sheet metal workers' manual; a complete, practical instruction book on the sheet metal industry, machinery and tools, and related subjects, including the oxy-acetylen welding and cutting process . Figure 235.—Section and Plan of Octagon Gutter Miter. is also drawn to a scale of 2 inches to the foot. In thisdrawing the section and plan are given of an octagon gut-ter forming a miter at an angle of 135° in the plan. Drawthe section and plan as shown. Number the corners onthe section and draw vertical lines intersecting the miterline in the plan. At right angles to the wall line drawthe stretch
. Sheet metal workers' manual; a complete, practical instruction book on the sheet metal industry, machinery and tools, and related subjects, including the oxy-acetylen welding and cutting process . Figure 235.—Section and Plan of Octagon Gutter Miter. is also drawn to a scale of 2 inches to the foot. In thisdrawing the section and plan are given of an octagon gut-ter forming a miter at an angle of 135° in the plan. Drawthe section and plan as shown. Number the corners onthe section and draw vertical lines intersecting the miterline in the plan. At right angles to the wall line drawthe stretch-out line, and develop the pattern in the SHEET METAL WORK AND PATTERN DRAFTING 293- Face Miters.—The method of developing the patternfor a face miter is shown in Figure 236. This process when developing the patterns for miters inpanel moldings, picture frames, and gable moldings, alsoto obtain the miter cut when the return molding of adormer window butts against a mansard roof or otherinclined surface. As may be seen from the drawing, themethod of development is similar to that described forthe return miter, Figure 230. The only difference is inthe position of the stretch-out line ab in the pattern forthe square face miter shown at 5. In this case thestretch-out line is placed in a horizontal position at theleft of the profile, while the stretch-out for the squarereturn miter, Figure 230, is placed in a vertical positionabove the profile. When developing the patterns for moldings, the sheetmetal worker must always be careful to place the stretch-out line in its proper position, or, instead of having a facemiter
Size: 1215px × 2057px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookidsheetmetalwo, bookyear1918
