How to create a network of object in AutoCAD

Let's explore the Polar Array in AutoCAD.

The Polar Array command helps create a network of object around a center point. each object being at a predetermined location from the others.

Let's use the following image as the base object of our network.

To create the array, we need to click on the following icon.

Now select the circe and press ENTER

Select the center of the circle.

Now you can use the tab that just popped up to specify the features of your array.

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AutoCAD modeling tutorial

Here is another nice AutoCAD modeling tutorial.

If you want to have a quick opinion about what modeling in 3D using AutoCAD is like, feel free to check the following video.

If you are given the final image, you will barely know what it takes to model the whole things. It is surprisingly easy when you know how AutoCAD works.

3D AutoCAD tutorial

Here is a good AutoCAD tutorial you would want to learn from.

This is not a tutorial for beginners, if you want to take full advantage of this tutorial, you need to have completed your 2D courses and mastered them.

Here we go!

It is 3D modeling AutoCAD tutorial.

This is a youtube video.

How to use the FILLET command in 3D

Here is how to use the FILLET command in 3D.

We will be using the 3D object we worked on, last time.

Here is the image we are going to be working on.

Let's use the FILLET command on the two lower edges to make them a little less sharp.

To use the FILLET command in 3D.

1. Select the FILLET command
2. Type R and press ENTER
3. Specify the radius of the fillet
4. Select the edges and press ENTER when you are done selecting all the edges

Here is the FILLET command

Here is the final result.

Hope it helped!

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How to subtract geometries in AutoCAD

Here is a quick tutorial on how to subtract geometries in 3D in AutoCAD.

We have had great time learning how to extrude and use the REGION command with AutoCAD in this post and this post.

Today we are going to learn how to subtract a geometry.

If you had time to check the post I linked up to above, you would notice that the piece at the center of the figure was a cylinder.

The whole 3D object was a combination of the bigger object and the cylinder.

Here is how to use that cylinder to make a cut at the center of the drawing.

The command we are going to use is called SUBTRACT.

To use this command

1. Type SUBTRACT and press ENTER
2. Select the bigger object and press ENTER
3. Select the object to be subtracted and press ENTER

Using these steps, Here is what I have been able to come up with.

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Using the REGION command

Using the REGION command before using the EXTRUDE command changes completely the end result you get after using the EXTRUDE command.

On this article, we learnt how to use the EXTRUDE command.

But I did not mention the REGION command there and if you remember, we used this image and got the following result.

Now let's use the REGION command before extruding. 

Type REGION, select the whole objects in the drawing area and press ENTER

After this. Use the step we learnt in the last post to extrude the whole thing.

And here we have it!

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How to extrude in AutoCAD

Here is a simple and one of the most used command in 3D while using AutoCAD. In fact, when you have a rectangle or a square, you can easily extrude them to get a box.

To used EXTRUDE in AutoCAD, you need to have the basic object created. I mean by the basic object, the square or the rectangle.

Here is how it works.

Let's consider the following image which we worked on in this post.

Let's extrude this figure.

I will first use the FREE ORBIT tool to get into an isometric view

Here is what the isometric view looks like

Now let's EXTRUDE.

1. Type EXTRUDE and hit on ENTER
2. Select the whole figure and hit ENTER
3. Move upwards and click when the length of extrusion satisfies you

Here you go!

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