Chapter 5Center LinesSlide 3Slide 4Precedence of LinesSlide 6Slide 7Projection of an ObjectSlide 9Slide 10Chapter 5MultiviewSketching & ProjectionPart 4Print handoutsSelect File, PrintEdit the following selections to read:Select the OK button2Center Lines1/16” GAP1/8” DASH¾” – 1-1/2” LONGThin dark linePurpose of a center line?To show location of a hole, arc, cylinder, etc.3Center LinesExtend center line ¼” past the holeHOW MANY CENTER LINES MISTAKES? Extend center line ¼” past the hole4Center Lines¼” past the end of the hole and/or cylinderEnd of cylinderEnd of holeEnd of hole5Precedence of LinesHIDDEN LINES TAKE PRECEDENCE OVER CENTER LINESOBJECT LINES TAKE PRECEDENCE OVER HIDDEN LINES¼” FROM END OF HOLE1/16” GAP6Center Lines1/16” gapIf longer than 1-1/2” add a dash in the middleINCORRECT7Fillets and Rounds: Self locating, so do NOT add center lines, but do draw where sharp corner would be.8Projection of an ObjectPOOR PRACTICEPREFFEREDWhy?Adds clarity9Projection of an ObjectPOOR PRACTICEPREFFERED PRACTICE10Projection of an ObjectPOOR PRACTICEPREFFERED
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