#Fillet

Key F.

#How to do it

1. Select edges — a click on an edge; a click on a face takes all its edges. Edges selected before the command are taken at once; you can also press Fillet first and click the edges.
2. Type the Radius into the field at the geometry. The preview shows the surface of the fillet on the part before it is applied.
3. Enter applies, Esc cancels.

A different radius at the ends: with the tool in hand, click a corner (a vertex) on a picked edge — a radius field of its own appears at the corner. The radius varies along the edge from corner to corner.

A fillet holds on to the edge, not to its number: change the extrusion height or move a wall — the fillet stays on the same edge.

#If it did not work

• The radius is refused before Enter — the program tries the fillet in advance and writes at the field why it fails: the radius is more than the geometry allows. The analysis goes edge by edge: which one takes a radius no larger than so much, which one takes none. Make the radius smaller or drop that edge.
• The node is yellow, some edges stayed sharp — those edges could not be taken, the rest are rounded; the warning says how many. Open the node with a double-click and pick other edges or another radius.
• Two neighbouring fillets cross — such edges are taken one at a time only. Round them in separate operations.

#Order matters

A fillet before a cut and the same fillet after it are different shapes. Fillets usually go last, once the main shape is ready; draft goes before fillets.

#See also

• Chamfer — the same edge, but a flat cut.
• The timeline and rollback — why fillets go at the end.