AutoCAD Tutorial – Draw Command

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AutoCAD Tutorial – Draw Command (Arc, ellipse, rectangle, polygon, and donut).

In the previous blog, we understood unit tools and few draw commands like line and circle.
let us continue with our AutoCAD tutorial – Draw commands.

Arc (A↵)

As we all know An arc is a part of the circumference of a circle passing through some points and with a radius. So to create a curve in our drawing without creating entire circle we use Arc command.
An Arc can be drawn in following methods such as
01. 3 point method
02. Start-Center-End
03. Start-Center-Angle
04. Start-Center-Length
05. Start-End-Radius
06. Start-End-Direction
07. Start-End-Angle
08. Center-Start-End
09. Center-Start-Angle
10. Center-Start-Length
11. Continue.

Method 1- 3 point method

In this method, we create an arc by specifying 3 known points i.e. a start point, a random point on the arc, and an endpoint.

Example of the use of Arc by 3 point method

Method 2- Start-Center-End method

An arc is part of a circle’s circumference it will have a center and a radius. So we can provide 3 points to create an arc i.e. a start point, then a known center point for the arc, and an endpoint.

Example of the use of Arc by the Start-Center-End method

Method 3- Start-Center-Angle method

In this method, Instead of providing the endpoint we provide the angle made by an arc at the center. Indirectly commanding the arc to end at a specific point.
Remember an arc can have any angle value between 0 and 360 but it cannot have a value of 0 and 360 as it means no arc. 

Example of the use of Arc by the Start-Center-Angle method

Method 4- Start-Center-Length method

Any arc drawn will have a distance between start point and endpoint known as a chord length. So instead of providing the endpoint, we give an indirect command of the endpoint by providing distance between endpoint.
Here like previous methods we must provide the start point and a center.

Example of the use of Arc by the Start-Center-Length method

Method 5- Start-End-Radius method

This method creates an arc using a start point, endpoint, and a radius. The radius can directly enter or by specifying a point at the desired radial distance.

Example of the use of Arc by the Start-End-Radius method

Method 6- Start-End-Direction method

In this method, we create an arc by specifying a start point, an endpoint and tangent direction at the start point.

Example of the use of Arc by the Start-End-Direction method

Method 7- Start-End-Angle method

This method creates an arc using a start point, endpoint and included angle made at the center. The included angle is the angle made by start and end points at center.

Example of the use of Arc by the Start-End-Angle method

Method 8- Continue method

This method is used to continue creating an arc from the last arc point (Endpoint of the previous arc).
The command for an arc is A↵ and the command for continuing an arc is A↵↵.

Example of the use of Arc by continuous method

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Ellipse (EL↵)

The shape of ellipse is just an oblong or an oval, with the major and minor axis.
Methods to create an ellipse are:
1. Axis Endpoint method
2. Center-Axis method

1. Axis Endpoint method

Here we first define any one axis (either major or minor axis) completely using endpoints.
Then we provide the distance of endpoint of other axes from the midpoint of the previously drawn axis.

Example of the use of Ellipse by axis endpoint method

2. Center-Axis method

In this method, we convert a circle into an ellipse by providing distances of endpoints.
Here first, we provide a center and then specify any one endpoint (same in providing a radius).
Then we provide the distance of another endpoint (forcing circle to transform into an ellipse).

Example of use of Ellipse by Centre axis method

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Rectangle (REC↵)

There are 4 ways to draw a rectangle:
1. Co-ordinate method
2. Area method
3. Dimension method
4. Rotation method

1. Co-Ordinate Method

In this method, we first provide a corner point and then we provide co-ordinates of the opposite corner.

Example of the use of Rectangle by Co-Ordinate method

2. Area Method

Just like the previous method, first step is to provide a first corner point (using mouse).
Then, instead of providing the location of opposite corner we provide the area of that rectangle.
To this command, the program will ask whether to create a rectangle using length or width as a reference. Select as per your convenience and then input the dimension of your reference and it will generate an appropriate rectangle based on data provided.

Example of the use of Rectangle by Area method

3. Dimension Method

Here, after providing the first corner we directly provide the dimensions of length and width.
And in the end, we click and provide a corner so that rectangle can be placed in a proper quadrant with respect to the first corner point.

Example of the use of Rectangle by dimension method

4. Rotation Method

It is to be used when the rectangle is to be placed at come angle with the origin.
Like all methods mentioned above, the first step is to provide a corner.
Then, instead of providing other corner or dimension we proceed with providing a rotation angle. And then we provide another corner, either by mouse click or any method from above.

Example of generating a Rectangle by using Rotation method

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Polygon (POL↵)

Using this command, we can create any polygon ranging from 3 sided to 1024 sides.
Methods to create any polygon are
1. Center method
2. Edge method

1. Center Method

In this method, we create a polygon using a circle.
The first step is to decide the number of sides of the polygon.
then we mark a center and decide whether the circle is to be inscribed (inside the polygon) or a circumscribed circle (passing through all vertices of the polygon). Once decided we provide the radius and program generates the polygon.

Example of the use of polygon by axis endpoint method method

2. Edge Method

Here we create a polygon with one of its edge as reference.
The first step is to enter the number of sides. then we enter into the edge command with E↵. Then we provide the first point and the last point of the reference edge. With this data, the program will generate a polygon.

Example of the use of polygon by Edge method

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Donut (DO↵)

This command is very simple to use. we provide inside diameter of the donut and outside diameter of a donut. Then to place it, we provide center point location either by mouse click or using co-ordinates.

 

Example of the use of the Donut command

Hope you find this blog useful. Like it? then share it with your friends and comment below for any query. See you at the next blog with new tools. Until then take care and be safe!!

 

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