What Is Fillet Command in AutoCAD?

The Fillet command in AutoCAD is a powerful tool that allows you to create smooth and rounded corners between two lines or objects. It is commonly used in architectural and engineering drawings to give a more polished and professional look to designs. In this tutorial, we will explore the various features of the Fillet command and learn how to use it effectively.

Using the Fillet Command

To access the Fillet command, you can either type ‘Fillet’ in the command line or select it from the Modify panel in the Home tab. Once selected, you will be prompted to select the first object or line that you want to fillet.

After selecting the first object, AutoCAD will ask you to select the second object or line. The Fillet command will then calculate the radius required for creating a smooth corner between these two objects.

By default, AutoCAD uses a radius of 0 for filleting. However, you can specify a specific radius value by typing it in the command line or by selecting two points on screen as references for determining the radius.

Fillet Options

The Fillet command offers several options that allow you to control its behavior:

  • Polyline option: This option enables you to create fillets on polyline corners. When selected, AutoCAD will automatically extend both sides of the polyline until they intersect and then apply filleting.
  • Trim mode: When enabled, this option trims off any excess geometry after filleting.

    It ensures that only the desired corner is rounded while removing any unnecessary lines or arcs.

  • Multiple option: This option allows you to create multiple fillets without having to reselect objects each time. Once enabled, AutoCAD will continue to prompt you for selecting additional objects or lines until you press Enter to exit the command.
  • Radius: As mentioned earlier, you can specify a radius value for the fillet. This option is particularly useful when you want consistent fillet sizes throughout your drawing.

Using Fillet in Practice

Let’s walk through a practical example to demonstrate how to use the Fillet command effectively:

  1. Select the Fillet command from the Modify panel or type ‘Fillet’ in the command line.
  2. Select the first line or object that you want to fillet.
  3. Select the second line or object for filleting. The corner between them will be rounded using the default radius.
  4. If desired, specify a radius value by typing it in the command line or selecting two points on screen as references.
  5. Choose any additional options based on your requirements (e.g., Polyline, Trim mode, Multiple).
  6. Continue selecting objects for filleting or press Enter to exit the command when finished.

The Fillet command is an essential tool for creating smooth transitions and rounded corners in AutoCAD. By utilizing its various options, you can achieve precise and professional results in your drawings. So go ahead and explore this powerful feature to enhance your designs!