(Available only in Pro Platinum)

Default UI Menu: Modify/Modify 3D Objects/Modify Edges/Fillet Edges

Ribbon UI Menu:

Rounds edges of solid (ACIS) 3D objects.

Only solid objects (not surfaces) can be selected for filleting. Filleting can either add or remove material; material is added to a concave edge, and it is removed from a convex edge. You can choose whether to create rounded or mitered vertices.

Note: You can edit a Fillet Edges operation in the Selection Info palette.