Use this when you want to round the corners of a polygon or polyline within a flow, for example softening lot corners or generating turning radii.
The fillet curve node is only for adding curves within a flow. Use the Corner Type property to change the corners (fillet, bezier, or chamfer) of a basic geometry without flows.
A fillet radius is the size of the rounded curve that replaces a sharp corner, measured as the distance from the curve to where the sharp corner would have been.
Inputs
Name | Abbreviation | Type | Access | Description |
Feature | F | Cartesian | Item | The feature to fillet |
Radii | R | Number | List | The radii of the fillet (default [0]) |
Blend | B | String | Item | The type of fillet: fillet or chamfer (default fillet) |
Outputs
Name | Abbreviation | Type | Access | Description |
Result | R | Cartesian | Item | The filleted polyline |
How to
Input a geometry from another node into the Feature connector
You can use Read Feature, or any node that outputs a single geometry
Input the radius into the Radii connector
Type a single number into the box, or input a number from another node
You can also feed in a list of radii. The radii will be applied in order (by index) to each corner/control point on the geometry.
Input the corner type as a string
Options are fillet or chamfer
The Round Corners node and Fillet Corners node are very similar. You would use the Fillet Corners node if you want each corner to have a different fillet radius, which can only be accomplished with this node due to the Radii field accepting lists.
Examples
A simple, single radius option.
A fillet creates a smooth, rounded curve at a corner (like a quarter-circle), while a chamfer cuts the corner off at an angle to create a flat edge.
Fillet | Chamfer |
 |  |
Multiple Radii
When you want each corner of a geometry to have different radii, input a list into the Radii field:
