Join Shaun Bryant for an in-depth discussion in this video Drawing circles, part of Cert Prep: AutoCAD Certified Professional (2015).
- What we're going to look at now in the drawing object section is we're going to look at drawing circles. And we're going to place three different types of circle in this drawing. Now, again, I'm staying in the 3_Drawing Objects_COMPLETE.dwg file and saving as I go along. Obviously you can do the same using the blank version of the drawing from the exercise files from Lynda.com. So I'm going to zoom in a little bit. I'm just going to put the crosshair in the center of the screen, roll up on the wheel a notch, just to make things a bit bigger now, because we're doing a little bit more detailed drawing here.
We're going to be using the rectangles here, this one here, and this one here, as part of the settings for some of the circles that we're going to draw. Now, the first one that we're going to draw is very quick and easy, and we're going to use some coordinates to place it first of all. So we go to the Home tab on the ribbon, like so, and in the Draw Panel. If I click on the little flyout there, underneath Circle, you'll notice that we've got lots of different types of circles that we can use. There's a Center, Radius circle, a Center, Diameter Circle, a 2 point circle, a 3 point circle, Tangent, Tangent and a Radius of a circle, Tangent, Tangent, Tangent circle.
Now we're going to use some of these, but what I suggest that you do for your AutoCad professional certification is make sure that you practice with each type of circle. I'm not going to show you every single one. But practice on separate drawings with different types of circles. See how they work, because you never know which type of circle that you may comes across in your professional certification exam. Now the first one that I'm going to place is a Center, Diameter circle. So I click on Center, Diameter and come into the drawing area.
Now you can see there "specify center point for circle." Now I could use an Object Snap. I can actually type in the x and y coordinates as well. So we're going to specify the center of the circle and then the diameter of the circle. Now the center of the circle by way of coordinates from the 0,0 the bottom left corner where the x and y is is going to be 25 in the x direction and then press Tab or the Comma key and then the other coordinate is going to be 16, like so.
Now when I press Enter, you'll see that the circle is starting up here, top right. And it's prompting me now for the diameter of the circle. And the diameter of this particular circle is going to be five units. Now a diameter goes all the way across the circle. It's not a radius coming from the center to the edge. Don't get those two confused, because it's very easy to do, and if you do that you might end up with a circle much, much bigger than you expected. So the diameter is going to be five. Type that in the box there where it's highlighted in blue.
Press Enter, and there's my circle with a diameter of five placed. Now the next one I'm going to place is in the rectangle here on the lefthand side. So I'm just going to pan upwards a little bit just so we've got it nice and center on the screen. And I'm going to use a Tangent, Tangent, Tangent circle. Now before I do that, make sure that your Tangent Snap is switched on. So we come down to the status bar, just click on the little arrow next to Object Snap there, and make sure that Tangent is on.
Now in AutoCAD 2016, I can just hover over it like that and click on it, little tick appears, my Tangent Object Snap is now on. I then click on the arrow again here to lose that menu. Make sure that Tangent Snap is on otherwise the next circle command will not work. So back up to the Circle flyout menu here, and I want Tangent, Tangent, Tangent. Now what this means is I'm selecting three different tangents to place my circle, and AutoCAD will calculate the radius or diameter based on those tangents.
So what I'm going to do is highlight here. See the Tangent Snap appear just there? So I click there, get a tangent on that line there, get a tangent on that line there, and each time the Tangent Snap appears, just click and there's my circle. So what it's done is it's defined a circle using that tangent, that tangent, and that tangent, where the circle touches each of those lines perpendicularly. Now the other type of circle that we're going to place is a Tangent, Tangent, Radius.
So this is tangential to two sides of the rectangle but then we type a radius in as well. So again, back up to the Circle command, and we're going to go for Tangent, Tangent, Radius right here. Again, making sure the Tangent Snap is on and using the righthand rectangle. When I get the tangent there, click once, when I get the tangent there, click twice, and then it will prompt me for a radius. If I come across like this, just take it away from the rectangle a little bit just to avoid the Object Snaps. And I'm going to put a radius of the circle in there of two.
Two units, and I press Enter and there's my Tangent, Tangent, Radius. So you can see it's tangential there, and it's tangential there, with a circle radius of two. So that's how you place some of the differing circles in AutoCAD. And I cannot stress enough, for your AutoCAD professional certification, practice with all of these different types of circles here in the flyout menu off of the ribbon. Have a go with each one so that you're prepared for your examination.
- 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.