Join Jeff Bartels for an in-depth discussion in this video Using the Object Snap menu, part of AutoCAD 2009: 2D Drafting Techniques.
A great way to increase your productivity is by using the Object Snap menu. This menu allows you to work faster because it puts your object snap choices right at your cursor. Since we are going to be talking Object Snaps, let's take a look at my current running object snaps. To do that I'm going to come down and right-click on my Object Snap Mode, and as usual I'm running a Center as well as Endpoint object snap. Now I typically have no more than two running object snaps going at a time, any more than that and I run the risk of accidentally selecting an incorrect snap.
So as far as my Object Snaps go my Endpoint and center point will be automatic, all the others, I'm going to pull from the Object Snap menu. Let me show you how the menu works. I'm going to hit Escape and what we are going to do is we are going to finish this geometry on the right such that it looks like the geometry on the left. I am going to start by creating a sketch line, I'm going to come up and launch the Line command, and I would like to create a line from this end point perpendicular to this bottom line. To access the Object Snap menu I'm going to hold my Shift key on my keyboard and right-click. This gives me access to every AutoCAD object snap right at my cursor. Now one thing to remember as soon as the menu comes up you can take your hand off the Shift key. Let's select Perpendicular from the menu and then I can click this line. When I'm finished I'm going to hit Escape to cancel the command.
Let's draw a line from the midpoint of this edge to the midpoint of this edge. I'm going to repeat my Line command. So right-click and select Repeat LINE and I'm going to draw that from Shift+ Right-click the Midpoint here to the Shift+Right-click Midpoint here. And when I'm finished I'll hit Escape. Let's construct our circle. I can see I have got a circle that's got a radius of 30 millimeters. I'm going to come up and launch my Circle command, and the center point of my circle is going to be at the intersection. Let's hold our Shift key and right-click, we'll select Intersection and I'll click my geometry right here. And I'll type in 30 and hit Enter.
Finally we'll create the last two circles. I'm going to find their locations using some offsets. Let's offset this bottom edge 25 millimeters to find the centerline of these circles. We'll launch Offset. We'll type 25 and hit Enter. I'll offset this line in this direction and I'll hit Escape when I'm finished. Now we can offset our centerline 25 millimeters in either direction to find the intersections that would represent the centers of our circles. One again, I'm going to launch Offset, I'll right- click and select Repeat OFFSET from the menu. I'm going to hit Enter on my keyboard to accept the distance and I'll offset this line to this side and this line to this side. Now when I'm finished I'll hit Escape.
I have just created object snaps where those circles need to be placed. Let's launch the Circle command and I'm going to place this at the Shift+Right-click. All the object snaps are right here at my cursor. I'll select Intersection right here and the circle has a radius of 12.5, Enter. And we'll do our remaining circle. I'm going to right- click, select Repeat CIRCLE, I'm going to place that to the Shift+Right-click Intersection right here and then we'll hit Enter to accept the previous radius. And now that we are finished we can erase some of these sketch lines. I'm going to select these and then I'm going to come up and click my Erase button.
Think for a minute about the number of times each day you select Object Snaps. If you use the Object Snap menu you can save yourself a great deal of time when working on your drawings.
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