Working With 2D Fillets and Rounds

Set the Fillet Radius

The fillet radius determines the size of the arc created by the FILLET command, which connects two selected objects or the segments in a 2D polyline. Until you change it, the fillet radius applies to all subsequently created fillets.

Note: If the fillet radius is set to 0, the selected objects are trimmed or extended until they intersect; no arc is created. When the fillet radius is set to 0, you can remove the arc segment between two straight line segments or all arc segments from a 2D polyline.

1. Click Home tab  Modify panel  Chamfer and Fillet drop-down menu  Fillet.  Find
2. At the Command prompt, enter r (Radius).
3. Enter a new fillet radius value.
   Once the fillet radius has been set, select the objects or line segments that define the points of tangency for the resulting arc or press Enter to end the command.
   Tip: Press and hold Shift while selecting objects or line segments to override the current fillet radius with a value of 0.

Add A Fillet Between Two Objects or Line Segments of a 2D Polyline

1. Click Home tab  Modify panel  Chamfer and Fillet drop-down menu  Fillet.  Find
2. In the drawing area, select the first object or line segment that will define the points of tangency for the resulting arc.
3. Select the second object or line segment.

Tip: At the main prompt of the FILLET command, use the Multiple option to continue adding fillets after selecting the first two objects or line segments. When the Multiple option is not used, the command ends after selecting the second object or line segment.

Add A Fillet Without Trimming the Selected Objects or Line Segments

1. Click Home tab  Modify panel  Chamfer and Fillet drop-down menu  Fillet.  Find
2. At the Command prompt, enter t (Trim).
3. Enter n (No Trim).
4. In the drawing area, select the objects or line segments that define the points of tangency for the resulting arc.

Insert Arcs At Each Vertex of A 2D Polyline

1. Click Home tab  Modify panel  Chamfer and Fillet drop-down menu  Fillet.  Find
2. At the Command prompt, enter p (Polyline).
3. In the drawing area, select a polyline.