Fillet

Fillet inserts circular arcs (fillets) between two straight segments in an item. First specify the arc radius and then snap the vertices to modify.

1. Select CAD > Alter > Fillet.
2. Enter a distance value.(This is the distance from the vertex to the start or end of the arc which will be drawn. A negative value gives an inverse fillet.).
   
   
3. Snap on the LineString item near to the vertex where you want the fillet to be created.
   
   

Examples of Distance settings:

Use a positive arc radius to add a smooth fillet:

Use a negative arc radius to add an inverted fillet, where the fillet's centre of curvature is located on the old vertex position:

Use 0 to remove the fillet.

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