How to Draw a Reference Line in Fusion 360

Construction Line

The construction line is used to create a line of infinite length. It is used as a reference to create other objects, as shown in the below image:

AutoCAD Construction Line

We can further trim the boundaries according to the requirements.

Note: The icon of the Construction Line will be visible under the 'Draw' section on the ribbon panel.

The construction line can be drawn in different ways, which are listed below:

  • Horizontal
  • Vertical
  • Angle
  • Bisect
  • Offset

Let's discuss each type.

Horizontal Construction Line

The steps to create a horizontal construction line are listed below:
  1. Click on the Construction Line icon, as shown in the below image:
    AutoCAD Construction Line
    Or
    Type XL on the command line and press Enter.
  2. Type H on the command line or command prompt and press Enter.
    Or
    Select Hor option displayed on the command line, as shown in the below image:
    AutoCAD Construction Line
  3. Specify a through point on the viewport.
    The horizontal construction line of infinite length will be drawn, as shown in the below image:
    AutoCAD Construction Line
    We can draw multiple horizontal lines by clicking (specifying the through point) as many times on the viewport.
    It is shown in the below image:
    AutoCAD Construction Line

Vertical Construction Line

The steps to create a vertical construction line are listed below:

  1. Click on the Construction Line icon, as shown in the below image:
    AutoCAD Construction Line
    Or
    Type XL on the command line and press Enter.
  2. Type V on the command line or command prompt and press Enter.
    Or
    Select Ver option on the command line. It is shown in the below image:
    AutoCAD Construction Line
  3. Specify through point on the viewport.
    The vertical construction line of infinite length will be drawn, as shown in the below image:
    AutoCAD Construction Line
    We can draw multiple vertical lines by clicking (specifying the through point) as many times on the viewport.

Angle Construction Line

The steps to create an angle construction line are listed below:

  1. Click on the Construction Line icon, as shown in the below image:
    AutoCAD Construction Line
    Or
    Type XL on the command line and press Enter.
  2. Type A on the command line or command prompt and press Enter.
    Or
    Select Ang option on the command line. It is shown in the below image:
    AutoCAD Construction Line
  3. Specify the angle of XLine (Construction line). For example, 30.

Remember: The angle is measured in counter-clockwise direction in AutoCAD.

The line of infinite length will be drawn, as shown in the below image:

AutoCAD Construction Line

Or

Specify the first and second point on the viewport, as shown in the below image:

AutoCAD Construction Line

The construction line will be drawn, as shown in the below image:

AutoCAD Construction Line

Or

Specify the reference point for the construction line. For that:

  • Type R or Reference on the command line after step 1 and step 2 as given above.
  • Select the reference line object.
  • Specify the angle.
  • Specify the through point and place the line on the desired position with the help of cursor.

We can specify any reference point according to the requirements.

Here, we have specified the reference point, as shown in the below image:

Bisect Construction Line

It creates all the lines from the specified angle vertex point or bisect point.

Let's understand by example.

The steps to create a horizontal construction line are listed below:

  1. Click on the Construction Line icon, as shown in the below image:
    AutoCAD Construction Line
    Or
    Type XL on the command line and press Enter.
  2. Type B on the command line or command prompt and press Enter.
    Or
    Select Bisect option on the command line. It is shown in the below image:
    AutoCAD Construction Line
  3. Specify the angle vertex point.
  4. Specify angle start point, as shown in the below image:
    AutoCAD Construction Line
    You can specify these two points according to the requirements.
  5. Specify the angle end point. It will be the point to fix the position of the construction line.
    The construction line will be drawn, as shown in the below image:
    AutoCAD Construction Line
    AutoCAD Construction Line
  6. Similarly, continue specifying the angle end point to draw multiple lines. These lines will be drawn with a fixed specified vertex point. It is shown in the below image:
    AutoCAD Construction Line

Offset Construction Line

It is used to create an offset of a specified line object.

Let's understand with an example.

The steps to create a horizontal construction line are listed below:

  1. Click on the Construction Line icon, as shown in the below image:
    AutoCAD Construction Line
    Or
    Type XL on the command line and press Enter.
  2. Type O on the command line or command prompt and press Enter.
    Or
    Select the Offset option on the command line. It is shown in the below image:
    AutoCAD Construction Line
  3. Specify the offset distance. For example, 2.
  4. Select a line object.
  5. Specify the side (direction) to create an offset, as shown in the below image:
    AutoCAD Construction Line

Similarly, we can use the above types of construction line in multiple ways.


How to Draw a Reference Line in Fusion 360

Source: https://www.javatpoint.com/autocad-construction-line

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