This is the first post of a series of 10 posts in which I intend to go through 10 3D CAD exercises for CAD beginners. In this series I will be using AutoCAD, a free version of this software is available for download on AutoDesk website.
I suggest for you to have a look at these 2D AutoCAD exercises before diving into this session.
The image below displays what we will try to draw today.
Draw the figures below.
After drawing A and B, use the REGION command to unite all the pieces.
To use the REGION command:
- Write REGION
- Hit ENTER on your keyboard
- Select all lines
- Hit ENTER
After using the REGION command, Use the EXTRUDE command on A with 25 and on B with 10.
Use the FREE ORBIT option to place yourself in the view similar to the one below.
Make sure your settings are correct in order to be able to MOVE the B figure from the center of the line shown with the red arrow to the center on A figure of the line pointed with the red arrow. After doing so, the figure should look similar to the one below.
Using the UNION command
- Select objects: Specify opposite corner: 1 found “Select A”
- Select objects: 1 found, 2 total “Select B”
- “Hit ENTER”
Use the UNION command to unite A and B together.
Use the FILLET command to get the four rounded corners with a radius of 5.
Using the FILLET command
- Current settings: Mode = TRIM, Radius = 5.0000
Select first object or [Undo/Polyline/Radius/Trim/Multiple]: “Select object”
- Enter fillet radius or [Expression] <0.0000>: 5
- Select an edge or [Chain/Radius]: “Select the edge”
- 1 edge(s) selected for fillet.
I hope these posts help you learn more and at the same time, give you a start in 3D CAD. Feel free to share your thoughts below
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