2012

NOTE If you want object snaps to ignore hatch objects, set the OSOPTIONS
system variable to 1.
Use Object Snaps in 3D
By default, the Z-value of an object snap location is determined by the object's
location in space. However, if you work with object snaps on the plan view
of a building or the top view of a part, a constant Z-value is more useful.
If you turn on the OSNAPZ system variable, all object snaps are projected onto
the XY plane of the current UCS or, if ELEV is set to a non-zero value, onto a
plane parallel to XY plane at the specified elevation.
NOTE When you draw or modify objects, make sure that you know whether
OSNAPZ is on or off. There is no visual reminder, and you can get unexpected
results.
To snap to a geometric point on an object
1 At the prompt for a point, hold down Shift and right-click in the drawing
area. Select the object snap you want to use.
2 Move your cursor over the desired object snap location.
If AutoSnap is on, your cursor automatically locks onto the snap location
you selected, and a marker and tooltip indicate the object snap point.
3 Select an object.
The cursor snaps to the eligible location closest to your selection.
To set running object snaps
1 Click Tools menu ➤ Drafting Settings.
2 In the Drafting Settings dialog box, Object Snap tab, select the object
snaps you want to use.
3 Click OK.
To turn on and turn off running object snaps as you work
■ On the status bar, click Osnap
, or press F3.
If running object snaps have been set, the settings are turned on or off.
628 | Chapter 17 Use Precision Tools