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Explore different drawing materials and techniques to create accurate representations. Understand grades of lead and the importance of working surfaces for optimal results in drafting and design technology.
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Terms & Definitions Drafting & Design Technology Unit 2
Drawing media Any type of drawing material upon which an object is graphically represented
Horizontal Parallel to the plane of the horizon
Lead Made of graphite with kaolin (clay) added in varying amounts in order to make the eighteen grades from the hardest to (9H) to the softest (7B)
Parallel Two lines or surfaces side by side, equal distance apart at all points
Perpendicular At a 90 angle to a given plane or line
Vertical A line straight up and down, perpendicular to the horizontal plane
Working Surface • Any surface such as a drafting board or desk used to secure drawing media