---
title: Rounding & Blending
order: 6
---

Chisel rounds edges in three places, all with the same five [profiles](profiles.md):

- [Rounding](rounding.md) rounds the edges of a single shape and is set on the shape.
- [Blending](blending.md) rounds the seam where two things meet and is set on the modifier.
- The [Smooth](../modifiers/smooth.md) modifier sets a minimum radius for every edge and seam of a shape.

These roundings are part of the shape itself, not added geometry, and they update as you move or change the shapes.

![The same box and post, Round profile](../assets/profile-round.webp)

## Every rounding and blend

| Where | Settings | Profile | In the viewport |
|---|---|---|---|
| A shape's edges or rims | **Profile**, **Rounding**, **Smooth** | yes | `B`, the teal Rounding arc |
| The upright edges of a Prism, Trapezoid or Oblong | **Bevel Profile**, **Bevel**, **Bevel Smooth** | yes | the green Bevel arc |
| An Ngon's corners | per corner: rounding, profile, **Smooth** | yes | the orange handles in [Edit mode](../interface/edit-mode.md); the Bevel arc for all at once |
| A path shape's Corner points | **Rounding**, **Corner Profile**, **Corner Smooth** ([Points](../primitives/paths/points.md#the-points-panel)) | yes | the orange handles in Edit mode |
| A Lathe's cut faces | **Side Rounding** | Round only | `B`, the Rounding arc |
| A Boolean's seam | **Blend**, **Profile**, **Outer**, **Smooth**, **Material Blend** | yes | `Ctrl + B`, the blue Blend arc |
| A Carve's rim | **Blend**, **Profile**, **Outer**, **Smooth** | yes | `Ctrl + B`, the blue Blend arc |
| An Emboss's or Engrave's edges | **Outer** and **Inner**, each with a profile and a Smooth | yes | `Ctrl + B` (Outer), the yellow or violet arcs |
| A Bisect's cut and polyline corners | **Blend**, **Profile**, **Outer**, **Smooth**; **Corner Blend** per corner | yes | the orange blend and corner dots |
| A Mirror's seam | **Blend** | Round only | none |
| Array copies | **Smooth** | Round only | the orange smooth dot |
| A Sweep path's corners | per point **Rounding** | Round only | the orange corner handles |
| The whole shape | Smooth modifier: **Radius**, **Profile**, **Smooth**, **Override All** | yes | none |
| A shape drawn in Block mode | its bevel, rounding and blend | yes | `B` and `Ctrl + B` while drawing ([Block mode](../interface/block-mode.md#bevel-rounding-and-blend)) |

Most of these are also dragged from the pie (South-West and East wedges), the right-click menu and the [Tape tree](../interface/tape-tree.md)'s right-click options.