Preciseliness Is Next to CADliness

In This Chapter

arrow Typing coordinates at the keyboard

arrow Getting to know the AutoCAD coordinate systems

arrow Snapping to object features

arrow Using other precision drawing and editing techniques

Drawing precision is vital to good CAD drafting practice, even more than for manual drafting. (Accuracy, of course, is vital to both types of drafting. If you’re sketchy on the difference between accuracy and precision, look ahead to the “CAD precision versus accuracy” sidebar in this chapter.) If you think CAD managers become tense when you assign properties directly to objects instead of ByLayer (see Chapter 9), wait until someone — we sincerely hope it’s not you — fails to use precision techniques when creating drawings in AutoCAD.

remember_4c.eps You must draw with precision (at least until you see Chapter 19. Now there’s a teaser for you). Typically, the only point you select at random in a drawing is the first one. Then virtually all line starts and lengths or ends, and all circle ...

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