Standard [Drawing] Line Types

This video is called “Standard Line Types, or Standard Drawing Line Types.” It is the 23rd video in the Engineering Design, Modeling and Graphics series, and is brought to you by www.cadmodelinghub.com/. This video instructs new and aspiring mechanical engineers, aerospace engineers, and automotive engineers on the ASME and ISO definitions of the standard drawing line styles and types. This video also explains and illustrates proper usage and application of these line styles in the creation of working drawings. Regardless of the ISO or ASME drafting standard used, engineers must understand the meaning of, and message conveyed by the use of these line types. Yes, the CAD system controls the thickness, dash spacing, arrows or not, etc. of when automatic preferences are configured; however, 3D CAD systems do not always finish the job of annotating line types correctly. This video covers Object Lines, Hidden Lines, Extension Lines, Dimensions Lines, Leader Lines, Center Lines, Symmetry Lines, Phantom Lines, Cutting-plane Lines, Viewing-plane Lines, Short and Long Break Lines, Stitch Lines and Chain Lines. It is up to the engineer, detailer and designer to make sure their working drawings are correct. What heretofore was done manually, with paper and pencil, is now done by engineers and designers use computer-aided design (CAD), sometimes referred to as 3D CAD, systems to accurately create 3D Designs and to simulate 3D products. It is the creation of correct and accurate engineering drawings using either ISO first angle projection or ASME third angle projection that allows manufacturers to correctly interpret the design’s working drawings. This video introduces drawing line types and choices, what each line type or style conveys and their proper and correct usage.
For more information, the syllabus, expanded course content, assignments, etc. regarding Engineering Design, Modeling and Graphics, visit: www.cadmodelinghub.com/eng-des...
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[@slykhajiit2]

This was remarkably clear and comprehensive. I agree with @Muntazir Ali, this is the best video for this topic.

[@Hamza16561]

Best Lecture.

[@omom1365]

Explain symmetry line, sir