If you have not started from the beginning, I would like to welcome you and to remind you, this is the fifth challenge in the series. If you happen to be a beginner, completing the previous challenges will help.
We previously worked on exercises that helped us master the following:
- The use of the LINE command in AutoCAD
- The use of the CIRCLE command in AutoCAD
- The use of the TRIM command in AutoCAD
- The USE of the UCS command in AutoCAD
Today, we are going to continue learning and the object that will allow us to do that is shown below.
As you might have noticed, the only added command here is the POLYGON command which you will have to learn if you want to successfully replicate the image above.
Learning AutoCAD Basics
It is important to have you see the following.
It is important to understand that the two polygons do not have the same characteristics. The Polygon on the left side of the image is a 6 side polygon circumscribed about a circle of R=20 and the Polygon on the right is a 5 side polygon inscribed in a circle of R=15. (illustrated on the image using the dashed red circle)
All fillet is R=10 units.
A trick you can use
It is possible to use the FILLET command on two parallel lines.
Using all we have learned in previous sessions you should be able to come out of this one without any hassle.
Learn AutoCAD Basics in 21 DAYS
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Hi there again, I have completed this tutorial but I have come across a mistake in which you may have put on your exercise. Correct me if I am wrong but the distance between the two circles which I have obtained was 59 not 79. In regards to the circle I have used your figures of 30R and 20R placing them at coordinates 30,30 and 129,30 respectively. Thanks
Hi John
There is no mistake on the length between the two circles. You must be doing something wrong. I have no idea why you selected these coordinates for the centers of the 30R and 30R (30,30 and 129,30). Their centers can be anything, but they have to be on the same horizontal.
If both circles are spaced from each other with 79 and these circles have respectively 30R and 20R, it means that the distance between the two centers is 79+30+20 which is 129.
Download the dwg file of this exercise to check it
Hi Andreea,
Thank you for your help I have cleared up the misunderstanding, in which you were correct I did make a mistake. Thank you again for the assisatance.
John
it’s my pleasure.
Hello, I have completed the whole diagram, but i just dont know how to make the line curve at the intersection of the circle. Please help