Hitting the Exact Target In AutoCAD (Object Snap)
The Object snap feature lets you snap to points that are geometric highlights of existing objects in the drawing. You can specify various snap modes. When you specify any combination of snap modes, the OSnap mode is activated, and a particular target symbol is added to the screen crosshair, to indicate the area within which AutoCAD will search for object snap elements.
To select a point using OSnap, position the crosshair so that the desired object falls within the target. It searches the target area for an object that satisfies at least one of the current object snap modes.
If the objective consists of more than one such object and each object have more than one snap point, the one closest to the crosshair position is Chosen. Object snap will recognize those entities that are visible on the screen. Thus drawing entities on layers that have been turned off are not seen by the OSnap.
The above diagram shows modes are available for object snap.
Snaps to the point on a line, arc or circle that is closest to the position of the crosshair.
Snaps to the nearby endpoint of a line or an arc.
This is used to Snap at the midpoint of a line or an arc.
Snaps to the center of a line or an arc.
Snaps to point entry
Snaps to the closest quadrant point of an arc or circle, i.e., 0,90,180 and 270 degrees points on a circle or arc.
Snaps to the intersection of two lines, a line and an arc or a circle, or two circles or arcs.
Snaps to the insertion point of a shape, text or block entity.
Snaps to the point perpendicular to a line arc, circle, ellipse, mline, polyline, ray, solid, spline or xline.
Snaps to the tangent of a circle, an ellipse or an arc that, when connected to the last point of the tangent line to the object.
The quick mode alters the method used by AutoCAD to select the snap points. It can be utilized only in combination with one or more modes. When many entities are visible on the screen, it can result in a noticeable delay. In such situations, quick mode along with other snap modes can be used. It snaps to the first snap point on the first object found.
Type first three letters of the modes, When using the object snap modes through the keyboard.