---
title: Box
order: 1
---

A rectangular box with optional edge rounding. The most-used primitive for hard-surface modeling, and the shape the [active tool](../../interface/active-tool.md) spawns by default.

![Box](../../assets/cube.webp)

## Parameters

- **Size** — base extent (default `2.0`)
- **Half-Extents (X, Y, Z)** — independent dimensions per axis, controlled by object scale
- **Rounding + Profile** — round any subset of edges by tuning rounding and profile
- **Chamfer Smooth** *(Profile = Chamfer)* — softens where the chamfer meets the faces

## Notes

The Box's single rounding value applies to every edge at once. [Oblong](oblong.md) is the same silhouette with the vertical corners and the horizontal rims controlled separately.

## See also

- [Oblong](oblong.md) — same silhouette, separate bevel and cap controls
- [Trapezoid](trapezoid.md) — a box frustum with a scalable top
- [Rounding](../../rounding-and-blending/rounding.md) — the rounding control in depth