---
title: Profiles
order: 3
---

Every rounding and blend uses one of five profiles: the shape of the curve across the edge. During a rounding or blend drag, the keys `1` to `5` switch between them. Changing the profile does not change the radius.

## Round

Key `1`. A circular arc. This is the default.

![Round profile on the box's edges, the post's rim and the seam between them](../assets/profile-round.webp)

## Sharp

Key `2`. A squarer curve than Round: it follows the faces further and turns more tightly near the corner, so the edge looks crisper.

![Sharp profile](../assets/profile-sharp.webp)

## Soft

Key `3`. Between Round and Sharp in shape. It meets the faces without a visible line, so reflections run smoothly across it.

![Soft profile](../assets/profile-soft.webp)

## Tight

Key `4`. The squarest curve: the corner stays nearly square, with a small round at its tip.

![Tight profile](../assets/profile-tight.webp)

## Chamfer

Key `5`. A flat cut at 45°. Its two edges can be rounded with **Smooth** (below).

![Chamfer profile](../assets/chamfer.webp)

## Chamfer Smooth

**Smooth** rounds the two edges where a Chamfer meets the faces. It starts at `0` and has a soft maximum of `0.5`. In the panel it appears under the radius only when the profile is Chamfer, labelled **Smooth**, **Bevel Smooth**, **Inner Smooth** or **Corner Smooth**. During a rounding or blend drag, `S` switches the drag to the Smooth and back. The Smooth modifier's radius drag has no `S`.

![B, S, a move outward, a click: the chamfer's two edges round](../assets/chamfer-smooth.webp)

## Where `1`–`5` work

- `B`, `Ctrl + B` and the Rounding, Bevel, Blend, Inner and Outer arcs;
- the pie's and right-click menu's **Rounding**, **Bevel**, **Blend**, **Outer**, **Inner** and **Smooth** drags, and the values in the pie's East wedge;
- `B` and `Ctrl + B` while drawing in [Block mode](../interface/block-mode.md#bevel-rounding-and-blend);
- the rounding handles of Ngon and path corners in [Edit mode](../interface/edit-mode.md);
- the Bisect blend and corner dots, and the [Smooth](../modifiers/smooth.md) radius drag.

Always round, with no profile: a [Mirror](../modifiers/mirror.md)'s **Blend**, an [Array](../modifiers/array.md)'s **Smooth**, a Lathe's **Side Rounding**, a [Sweep](../modifiers/sweep.md)'s corners.

## See also

- [Rounding](rounding.md), [Blending](blending.md)
- [Keymap](../keymap.md#during-a-drag)