Join Shaun Bryant for an in-depth discussion in this video Drawing arcs, part of Cert Prep: AutoCAD Certified Professional (2015).
- We're now going to look at drawing arcs in our AutoCAD drawing, in preparation for our AutoCAD professional certification exam. So you'll notice I've stayed in the three drawing objects underscore complete dot DWG file. Obviously, if you're following along from the blank drawing, from when you first started out, with the exercise files from lynda.com, you should be in the same position as me now, saving the drawing as we go. And you can see now that we've got all the circles and the rectangles placed from the previous videos.
I'm just going to zoom and pan a little bit, so I'm going to pan down, and zoom in so that I can see the tops of these lines here. So I want the sort of top here like that, just halfway down, and we're going to place an arc using this line here, and this line here. But we're going to place two different types of arcs. Now there's lots of different types of arcs in AutoCAD. Make sure, and I can't stress this enough, that you practice with each different type of arc.
Because you don't know which type of arc you're going to need to use in your professional certification exam. So we go to the Home tab on the ribbon again and into the Draw panel, and click on the flyout underneath the Arc command. And you can see lots of different arcs available to you. I'm going to start with one of the more basic ones which is Start, Center, End. And as I come into the drawing area now it's prompting me for the start point of the arc. Now before you do anything else, go down to your objects snaps here, you can do that mid command, click on the arrow.
Just make sure that Endpoint and Midpoint are on. They should be, by default anyway, but just make sure they're on, those two there. So click on them to make sure that they're ticked. If you click on them again it unticks them and it will toggle on and off. Then if I come down to the arrow here and click here, that closes that menu. Now the start point of my arc is going to be the right hand end of the line. Now that's because AutoCAD, by default, does arcs and angles anti-clockwise, or counterclockwise.
And if I go here to this endpoint here that will be the start point of my arc. So there's the endpoint snap, I left click. The center point of my arc will be the midpoint snap here along the line. Click again. And then as I come across can you see the arc taking shape? There's the endpoint of my arc and I click again. And that closes out the command. So it is start point there, go to the midpoint for the center, and endpoint for that endpoint snap there. Now I'm going to recreate exactly the same arc, but use a totally different method.
So I'm going to place an arc now on this line here. I'll go back up to the flyout here on the Arc menu, and I'm going to select Start, End, Angle, which is the included angle for my arc. So I click again and I'm going to utilize this start point here, like so. So that's my start point, so I click, I come across to my endpoint here, and I click again, like so. Now you can see there, look, as I come up can you see as I move around it's trying to form the arc but it needs the included angle in that entry box there.
So if I type in 180 degrees, like that, and press Enter, now it's positive 180 degrees because I started my arc on the right hand end of the line. That means I'm coming from the right hand end of the line over towards the left hand end of the line. So that means it's a positive angle because I'm going anti-clockwise, or counterclockwise. Remember that little trick. That counterclockwise thing is very important, especially in your AutoCAD professional certification exam. Press Enter now and that arc is exactly the same as the left hand arc, but I've drawn it using a totally different method.
So get practicing with those different arc methods and get ready for your AutoCAD professional certification exam.
- Creating and publishing AutoCAD files
- Drawing shapes and lines
- Creating isometric drawings
- Transforming objects
- Creating and using arrays
- Organizing objects and layers
- Reusing content with blocks
- Adding text, dimensions, multileaders, and scales
- Creating layouts
- Setting printing and plotting options
Skill Level Appropriate for all
Q: Is this certification available for AutoCAD for Mac users?
A: AutoCAD certification is on the Windows environment only. Currently Autodesk does not have plans for an AutoCAD for Mac certification.
Q: This course was updated on 02/01/2016. What changed?
A: We added four new videos to the "Certification: What Is It?" chapter. These tutorials cover Certiport, the online certification service that now offers a variety of Autodesk certifications.