Working Drawings Engineers and technicians to convey ideas to those who are to execute their designs use working drawings. You are to perform the role of the engineer and prepare working drawings of the sketches using instruments and the proper drafting techniques on drawing paper. Use full scale or larger for all parts. Include at least one half section on one of the detail drawings and at least one isometric on the exploded assembly drawing. Place a three-decimal equivalent of fractions on all machined holes.
Tolerances use only decimals, no fractions.
Use a thread note on all internal and external threaded features. Note transitional, clearance and interference limits of tolerance fit for three mating parts . If your drawing contains a spring, follow the directions in the text to draw and dimension it. Since only standard abbreviations may be used, check each in the appendix of the text. Use aligned lettering system, finish marks where needed and place a fillet and round note on all pages.