Discuss the thickness (weights) of lines and when each type should be used.
What will be an ideal response?
The thickness (weights) of lines are relative because they depend largely on the size of the drawing and the complexity of each member of an object. For this reason, comparative thicknesses (weights) of lines are used. ANSI recommends two line thicknesses: thick and thin. Thick lines are two times the thickness of thin. Drawings used to meet military standards have three line thicknesses: thin, medium, and thick.
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