Voxel Model Painter

Paint a colored voxel model layer by layer, inspect it in 2D and 3D, and export the in-memory model.

What this tool does

Voxel Model Painter provides a cross-section canvas and a Three.js 3D preview for building voxel geometry. Paint, erase, fill, line, rectangle, and circle regions, switch layers, show an onion-skin previous layer, copy or paste a layer, and group voxels by color in the preview.

Who this is for

Makers creating small voxel-style assets for 3D workflows
Students learning layers, voxel dimensions, and mesh export
Developers prototyping an in-browser voxel editor

How to use this tool

Set grid resolution, maximum grid resolution, voxel size, render scale, brush size, and the current Z layer.
Choose Paint or Erase and use Pencil, Line, Rect, Circle, or Fill on the cross-section.
Use Copy/Paste or Clear Layer as needed and optionally show the previous layer.
Inspect the colored model in the 3D preview.
Export the in-memory voxel model as OBJ, STL, or GLB.

Inputs

Inputs include a grid from 8–64, a maximum resolution from 16–256, voxel size in millimeters, render scale, color, brush size, Z layer, drawing tool, and voxel-map coordinates. The page does not provide model import or project loading.

Outputs

The app renders a 2D cross-section and colored 3D preview. Export downloads model.obj, model.stl, or model.glb. Exports are generated from the current in-memory voxel map and do not include textures or a project file.

Example use cases

Sketch a simple voxel icon or blockout
Paint different colors on separate layers and inspect the volume
Export a quick geometry draft for another 3D application

Related SolvProb tools

Frequently asked questions

Can I import an existing voxel model?

No. The editor starts with an empty in-memory voxel map. Reloading the page loses the current model because there is no project save or load feature.

What happens at high resolutions?

Dense voxel models can be expensive because export builds geometry for individual voxels before grouping by color. Use smaller grids for faster previews and exports.

Do exports include textures?

No. OBJ, STL, and GLB exports represent the colored voxel geometry; the page does not paint or embed image textures.

Need a custom tool built for your business?

SolvProb builds custom web apps, automation tools, and interactive experiences tailored to your workflow.

Talk to SolvProb →