What Are Vector Handles on a Curve in Blender?

Vector handles are a specialized control point setting in Blender's curve editing toolset designed to create sharp corners and perfectly straight line segments. Unlike smooth handles that generate continuous, flowing curves, vector handles automatically point directly toward adjacent control points. This guide covers how vector handles function, how to enable them using Blender shortcuts, and the best practical scenarios for using them in 3D modeling and animation.

How Vector Handles Work

When a control point on a Bezier curve is set to Vector mode, its handles extend directly along the straight paths connecting it to neighboring control points. This forces the curve segment between the points to become a rigid, straight line rather than a bendable spline.

If you translate a control point set to Vector, the handles dynamically recalculate their direction to remain aimed at adjacent control points, preserving the sharp angle and straight geometry automatically.

Identifying Vector Handles in Blender

In Blender's 3D Viewport, curve handles are color-coded based on their handle type. In the default color theme:

  • Vector handles are colored green.
  • Automatic handles are colored yellow.
  • Aligned handles are colored pink.
  • Free handles are colored black.

If you manually rotate or scale a vector handle, Blender automatically converts it into a Free handle, allowing for custom asymmetrical adjustments.

How to Set Curve Handles to Vector Mode

To convert existing curve handles to vector handles:

  1. Select the curve object and press Tab to enter Edit Mode.
  2. Select the target control point(s).
  3. Press V on your keyboard to open the Handle Type menu.
  4. Select Vector from the menu.

You can also change the default handle type for new control points by opening the Set Handle Type menu (V) before extending a curve with E.

Best Use Cases for Vector Handles

Vector handles are useful whenever you need precise geometric shapes or linear transitions:

  • Architectural Modeling: Creating sharp-cornered walls, frames, pipes, or moldings.
  • Hard-Surface Paths: Defining rigid edges for bevel profiles and curve modifiers that should not bow outward.
  • Low-Poly Graphics: Structuring flat-sided vector paths or 3D logos with sharp vertices.
  • Animation Graph Editor: Setting linear interpolation between keyframes for sudden direction changes or uniform motion.