Create and edit objects using object snaps

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Snapping to existing geometry helps users to

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be efficient and precise in creating drawings.

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Object snaps offer a wide range of geometric snap opportunities.

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After completing this video, you will be able to

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use object snaps for creating and editing objects

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open the shaft assembly drawing provided in the data set.

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First, let's make sure that your status bar is set up correctly for this exercise.

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Click the customization icon in the lower right corner,

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make sure that two D object snap is checked.

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Object snap tracking is checked and that polar tracking is checked,

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click away from the menu to dismiss it and on the status bar,

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make sure that object snaps are turned on.

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And for this portion of the exercise, make sure that

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object snap tracking is off and polar tracking is off.

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Click the down arrow beside the object snap icon

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or right, click on the icon and make sure that at a minimum

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in point midpoint and intersection are checked.

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The o snaps that are checked on the menu are those that are currently active.

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When prompted to pick a point AAD

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will attempt to snap to one of these points on the geometry that is near your cursor

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on the ribbons home tab,

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click the line command on the draw panel as you place

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your cursor near the end of one of the red lines,

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a green object snap marker displays indicating that AUTOCAD

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is located an end point click to accept that point,

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pull your cursor down to the next end point.

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And AUTOCAD

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again identifies an object snap note that if your cursor is moved, it may acquire

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a nearby object snap instead of the one that you intend to snap to

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when Autocad

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has identified the end point, click to end the line segment

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and press enter to complete the command on the left end of the shaft assembly.

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The green circle needs moved to the right to be

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centered within the green rectangle on the ribbons home tab,

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click the move tool on the modify panel,

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pick the circle and hit enter to finish selecting objects.

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Since the center marks are associated to the circle,

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they will move automatically when we move the circle for the base point,

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pick the midpoint of the center mark.

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But for the second point, we don't have an object snap.

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That's in the middle of this rectangle.

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For this, we'll use what's called an object snap, override.

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An object snap, override instructs Autocad

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temporarily to look for a specific object snap for the next point that's picked,

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hold the control key down and right click to display the object snap menu,

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choose the mid between two points override.

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And then select the lower left end point

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and the upper right end point.

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And the second point of the move will be

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located at the midpoint between those two points.

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Let's perform a similar task with the magenta circle

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in the middle of the shaft. But we'll use a different technique

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called object snap, tracking

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on the status bar, click the object snap tracking icon to turn it on.

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Repeat the move command,

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pick the magenta circle

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for the base point, pick the middle of the center mark.

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And this time we're gonna hover our cursor at the top horizontal magenta line.

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Notice the green plus sign that's displayed at that midpoint

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by hovering our cursor temporarily over this midpoint autocad

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acquires this point and remembers it as we drag our cursor around the drawing.

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We can now place our cursor in the middle of the magenta right

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tale and note that the tool tip displays that

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this destination point is established by combining the X coordinate

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of the mid point at the top of the rectangle with the Y coordinate of the base point.

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Click to accept the destination point.

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Object snaps can also be used with

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polar tracking for further flexibility and accuracy.

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Click the sub menu arrow beside the polar tracking icon on the status bar.

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Choose tracking settings,

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check the polar tracking on option

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and set the increment angle to 30.

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This will cause the cursor to snap to 30 degree increments

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similar to how the cursor snaps when Ortho mode is turned on,

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additional angles can also be added to handle special conditions.

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Click, OK.

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Start the line command

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and pick the start point just below the top right corner of the rectangle.

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As you pull your cursor away, you can see it snap every 30 degrees

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polar tracking allows for both flexibility by being able to draw in any direction

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and also accuracy by letting you snap

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at selected increment angles, move your cursor to snap to the 150 degree angle

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and then place your cursor near the top horizontal yellow line.

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Autocad

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shows an intersection object snap. Technically, it's not a true intersection

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but

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autocad allows you to snap to an inferred object snap point.

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When combined with polar tracking,

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click the intersection to complete the first line segment,

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pull the cursor down vertically. Again,

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the combination of polar tracking and object

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snaps infers an intersection at the bottom,

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click that point

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and then click the end point on the right to complete the line command,

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the trim command and the match properties command can be used to finalize the edit.

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The use of object snaps is not only fundamental in creating accurate drawings

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but is also important in speeding up the creation of your drawings.