Mesh Spiralize 3D

Generates a continuous spiral path from a mesh by raycasting inward from outside the bounding box. The resulting path follows the mesh surface, suitable for single-contour 3D printing (vase mode) or decorative spiral toolpaths.

Node

Interactive preview is available in the interactive reader.

Sockets

Mesh (in): Mesh — the 3D mesh to spiralize (required).
Spiral Path (out): Path — the generated continuous spiral curve.

How It Works

Connect a mesh (from Loft, Revolve, SDF, or any mesh source).
The node computes the mesh bounding box and determines the Z extent.
For each angular sample, a ray is cast inward from outside the mesh toward the center.
Hit points on the mesh surface form the spiral path.
The path rises continuously in Z by the configured layer height per revolution.

Spiral Modes

Continuous Spiral: Standard vase-mode spiral — Z increases linearly with angle.
Vertical Columns: Samples cycle through Z within each turn — creates vertical column patterns.
Conical: Linear Z progression over total path length — cone-like spiral.
Horizontal Rings: Flat rings at each layer height — stepped horizontal slices.

Parameters

Spiral Mode: Algorithm for Z progression (see above). Default: Continuous Spiral.
Spacing Mode: How samples are distributed: Angular (equal angles), Arc Length, or Z. Default: Angular.
Samples per turn: Number of ray samples per revolution. Default: 100.
Layer Height: Z rise per full revolution (mm). Default: 0.2.
Min segment length: Filter out points closer than this distance. Default: 0.01.