Easy-to-follow video tutorials help you learn software, creative, and business skills.Become a member

Locking to geometry using object snaps

From: AutoCAD 2013 Essentials: 02 Drawing Fundamentals

Video: Locking to geometry using object snaps

AutoCAD views all geometry within the context of coordinates. This makes it very easy for us to construct new geometry from any existing line work. In this lesson, we're going to use object snaps to lock on to specific points of an existing object. On my screen, I have two columns. The column on the right represents finished drawings and the column on the left represents some unfinished line work. Our goal in this lesson is to make the geometry on the left look like the geometry on the right. Let's start at the top. I'm going to hold my mouse wheel down, I'll center this geometry, and then I'll roll the wheel forward to zoom in.

Locking to geometry using object snaps

AutoCAD views all geometry within the context of coordinates. This makes it very easy for us to construct new geometry from any existing line work. In this lesson, we're going to use object snaps to lock on to specific points of an existing object. On my screen, I have two columns. The column on the right represents finished drawings and the column on the left represents some unfinished line work. Our goal in this lesson is to make the geometry on the left look like the geometry on the right. Let's start at the top. I'm going to hold my mouse wheel down, I'll center this geometry, and then I'll roll the wheel forward to zoom in.

To finish this drawing, I'll need to use the Line command, and I'll have to draw a line from the end point of the upper entity to the end point of the lower one. All I need to know is what coordinates those are. Fortunately, AutoCAD will do all of the work for me. I'll start by launching the Line command and when AutoCAD asks for a point, I'll hold down my Shift key and right-click. This brings up the Object Snap menu. Object snaps allow us to snap to specific coordinates on an object. I'm going to select Endpoint and then I will place my cursor on the object and click. Notice that AutoCAD snapped right to that coordinate.

To finish this, I'll hold my Shift key and right-click, I'll select Endpoint again, and then I'll place my cursor on this entity. And before I click to accept this point, notice that I don't have to be right on it to get the end point. So long as I am 50 percent of the way or better on this line, I can grab that right end,point. As soon as I cross the middle of the line, you can see if I click here, I'm going to grab the other end point. So you don't have to be right on the object snap to get it. I'm going to click here to finish my segment and then I'll press Escape. We have just seen an example of the end point object snap. I'm going to pan this up and we'll take a look at this geometry. To finish this drawing, I'm going to use the Circle command. And I would like to construct my circle such that the center point is at the--Shift+Right-Click-- midpoint of this object.

I'll put my cursor on the object. Note that AutoCAD finds that location. I'll click to accept it. Now, let's take care of the radius. In this case I don't know what the radius is, but I don't have to know. I can define the radius by holding the Shift key and right-clicking. I'll choose Endpoint and I'll snap to the end point of this line. In this case, we've seen an example of the midpoint object snap. I'm going to pan this up further, and we'll look at this example. This time I'm going to use intersection. I'll launch my Line command.

And I'd like to draw a line from the intersection of these two entities to the intersection of these two. To do that, I'll hold my Shift key, I'll choose Intersection, and I'll place my cursor at the intersection. I'll click, I will then hold my Shift key, select Intersection again, and I'll place my cursor at the intersection of these entities. When I'm finished, I'll press the Escape key to finish the line. To finish the geometry, I'll launch the Circle command. And I would like create the circle such that its center point falls at the intersection of this line extended and this one. Fortunately, when using the intersection object snap, I don't have to have a physical intersection. I can hold my Shift key and right-click, I'll choose Intersection, I will then click the first object, and then I'll click the second object and AutoCAD finds the intersection for me.

I will then define the radius by holding the Shift key, right-click, I'll choose Endpoint, and I'll draw my radius to the end point of this line. This was an example of the intersection object snap. I'll pan the drawing up further. To finish this geometry, I'm going to use a center object snap. I'll launch my Line command and I'm going to draw my line from the--Shift+ Right-Click--center and then I will put my cursor on the object. Think of the cursor as being AutoCAD's eye. When you put your eye on the object, AutoCAD finds that object snap, you can click to accept it. I will then draw this to the--Shift+Right-Click-- center of this object. When I'm finished, I'll press Escape. To wrap up this drawing, I'll launch the Circle command. And I'm going to create the circle from the--Shift+Right-Click-- midpoint of this object, and I'll draw it to the intersection of this object. This example highlighted the center object snap. I'll pan this up a little more. This time we're going to talk about quadrant. Quadrants are associated with circles. If I select this circle, we can see that these little blue grips pop up at the location of the quadrants. Generally speaking, the quadrants are located at the north, south, east, and west locations of a circle. I'm going to press Escape to deselect this object. I will then launch my Line command and I'll draw my line from the--Shift+Right-Click-- quadrant, here. I'll draw this to the--Shift+ Right-Click--quadrant over here. I will then go to the quadrant down here, to the quadrant over here. I will then go to the center of the circle, and when I'm finished I'll come down and select Close to finish the shape. This was an example of the quadrant object snap.

Let's pan this up. This time we'll look at Perpendicular. Perpendicular allows us to snap such that we create a 90-degree angle. I'm going to start by launching the Line command, and I'll start my line from the--Shift+Right-Click-- midpoint of this object, and I'll draw it to the perpendicular of this object. Once again, I'm putting my eye on the object. I can click anywhere on this object I want and AutoCAD's going to find that perpendicular location. When I'm finished, I'll press Escape. Perpendicular is nice because we can even use this in the other direction. I'm going to press my spacebar to re-launch the Line command and this time I'll select perpendicular first. I'll click the object and as I pull away, notice that I'm creating an entity that is perpendicular to the object that I selected.

I'd like to draw this to the midpoint of this entity and I'll press Escape. So this is an example of the perpendicular object snap. We'll look at one more. This time we're going to talk about Tangent. To finish this drawing, I'll need to create a line segment that is tangent to this circle and tangent to this one, and I'll need to do that on both sides. So I'm going to launch the Line command, I'll draw this from--Shift+ Right-Click--tangent to this circle to a point tangent to this circle, and I'll press Escape. I will then press my spacebar to relaunch the Line command and I will draw my next line tangent to this circle, to a point tangent to this circle. When I'm finished, I'll press Escape. So this is an example of the tangent object snap. Whenever you're creating geometry that is based on existing line work, it's important to use object snaps. Using object snaps is the best way to ensure the line work you create is accurate.

Show transcript

This video is part of

Image for AutoCAD 2013 Essentials: 02 Drawing Fundamentals
AutoCAD 2013 Essentials: 02 Drawing Fundamentals

27 video lessons · 9419 viewers

Jeff Bartels
Author

 

Start learning today

Get unlimited access to all courses for just $25/month.

Become a member
Sometimes @lynda teaches me how to use a program and sometimes Lynda.com changes my life forever. @JosefShutter
@lynda lynda.com is an absolute life saver when it comes to learning todays software. Definitely recommend it! #higherlearning @Michael_Caraway
@lynda The best thing online! Your database of courses is great! To the mark and very helpful. Thanks! @ru22more
Got to create something yesterday I never thought I could do. #thanks @lynda @Ngventurella
I really do love @lynda as a learning platform. Never stop learning and developing, it’s probably our greatest gift as a species! @soundslikedavid
@lynda just subscribed to lynda.com all I can say its brilliant join now trust me @ButchSamurai
@lynda is an awesome resource. The membership is priceless if you take advantage of it. @diabetic_techie
One of the best decision I made this year. Buy a 1yr subscription to @lynda @cybercaptive
guys lynda.com (@lynda) is the best. So far I’ve learned Java, principles of OO programming, and now learning about MS project @lucasmitchell
Signed back up to @lynda dot com. I’ve missed it!! Proper geeking out right now! #timetolearn #geek @JayGodbold
Share a link to this course

What are exercise files?

Exercise files are the same files the author uses in the course. Save time by downloading the author's files instead of setting up your own files, and learn by following along with the instructor.

Can I take this course without the exercise files?

Yes! If you decide you would like the exercise files later, you can upgrade to a premium account any time.

Become a member Download sample files See plans and pricing

Please wait... please wait ...
Upgrade to get access to exercise files.

Exercise files video

How to use exercise files.

Learn by watching, listening, and doing, Exercise files are the same files the author uses in the course, so you can download them and follow along Premium memberships include access to all exercise files in the library.


Exercise files

Exercise files video

How to use exercise files.

For additional information on downloading and using exercise files, watch our instructional video or read the instructions in the FAQ .

This course includes free exercise files, so you can practice while you watch the course. To access all the exercise files in our library, become a Premium Member.

Join now Already a member? Log in

Are you sure you want to mark all the videos in this course as unwatched?

This will not affect your course history, your reports, or your certificates of completion for this course.


Mark all as unwatched Cancel

Congratulations

You have completed AutoCAD 2013 Essentials: 02 Drawing Fundamentals.

Return to your organization's learning portal to continue training, or close this page.


OK
Become a member to add this course to a playlist

Join today and get unlimited access to the entire library of video courses—and create as many playlists as you like.

Get started

Already a member ?

Become a member to like this course.

Join today and get unlimited access to the entire library of video courses.

Get started

Already a member?

Exercise files

Learn by watching, listening, and doing! Exercise files are the same files the author uses in the course, so you can download them and follow along. Exercise files are available with all Premium memberships. Learn more

Get started

Already a Premium member?

Exercise files video

How to use exercise files.

Ask a question

Thanks for contacting us.
You’ll hear from our Customer Service team within 24 hours.

Please enter the text shown below:

The classic layout automatically defaults to the latest Flash Player.

To choose a different player, hold the cursor over your name at the top right of any lynda.com page and choose Site preferences from the dropdown menu.

Continue to classic layout Stay on new layout
Exercise files

Access exercise files from a button right under the course name.

Mark videos as unwatched

Remove icons showing you already watched videos if you want to start over.

Control your viewing experience

Make the video wide, narrow, full-screen, or pop the player out of the page into its own window.

Interactive transcripts

Click on text in the transcript to jump to that spot in the video. As the video plays, the relevant spot in the transcript will be highlighted.

Are you sure you want to delete this note?

No

Your file was successfully uploaded.

Thanks for signing up.

We’ll send you a confirmation email shortly.


Sign up and receive emails about lynda.com and our online training library:

Here’s our privacy policy with more details about how we handle your information.

Keep up with news, tips, and latest courses with emails from lynda.com.

Sign up and receive emails about lynda.com and our online training library:

Here’s our privacy policy with more details about how we handle your information.

   
submit Lightbox submit clicked
Terms and conditions of use

We've updated our terms and conditions (now called terms of service).Go
Review and accept our updated terms of service.