What is Multi-Axis Slicing?

The Basics

In conventional 3D printing, a slicer takes your 3D model and cuts it into flat, horizontal layers. Each layer is a 2D cross-section that gets deposited on top of the previous one. This is 3-axis slicing — the tool moves in X, Y, and Z.

Multi-axis slicing adds two more degrees of freedom. The tool (or the part) can tilt and rotate during deposition, which means layers don’t have to be flat or horizontal. They can be curved, angled, or conformal to existing geometry.

Why It Matters

3-axis slicing works well for simple geometries, but it has fundamental limitations:

  • Overhangs require support structures
  • Curved surfaces show staircase artifacts
  • Repair operations on non-flat surfaces are impossible
  • Structural properties are limited by horizontal layer orientation

Multi-axis slicing removes these constraints. By controlling the build direction per region, you can print overhangs without supports, follow surface curvature for smooth finishes, and deposit material on existing non-flat geometry.

Methods

The 5 Axis Slicer supports four distinct multi-axis slicing methods:

  1. Multi-Planar — Multiple build directions in a single part
  2. Non-Planar — Curved layers that follow surface geometry
  3. Conformal — Layers that conform to existing substrate surfaces
  4. Voxel-Based — Volumetric decomposition for spatial parameter control

Each method is suited to different manufacturing challenges. Learn more about each method →