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Standard colors and line weights in CAD

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Revision as of 02:41, 24 March 2006; view current revision
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Complied by Allan - 10-July-2005

Color your judgment

In a CAD system, colors are most commonly used to represent line weights. Selecting different colors is just like picking up pens with varying line thickness. We then tie these colors into layers to control the visibility of drawing components.

There are no right and wrong coloring systems — but there are some that have become more prevalent than others. Drafting managed quite well for centuries before CAD came onto the scene. It's hardly surprising then that the most common color system has its roots in a well-established manual drafting system. Many offices have adopted the ISO/DIN line weight color coding system commonly seen in the identification the bands of drafting pens as follows:

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