ColorStack

Multicolor 3D printing tools

ColorStack is a suite of browser tools for different multicolor workflows—layer painting, backlit lithophanes, and flat multicolor plates.

Pick the workflow that matches how your print will be viewed and which printer you use.

Explore ColorStack

Who it is for

  • Makers new to multicolor FDM
  • AMS owners and manual filament changers
  • Shops offering custom color prints

What you can make

  • Filament-painted portraits
  • Color lithophanes
  • Flat signs and badges

How it works

  1. 1

    Choose your workflow

    ColorStack mode for front-lit layers, LithoStack for backlit relief, FlatStack for flat plates.

  2. 2

    Upload source art

    Photos, logos, and illustrations all work with different tuning per mode.

  3. 3

    Configure colors and size

    Set palette, dimensions, and export format for your slicer.

  4. 4

    Print and finish

    Slice with appropriate infill, change filaments or use AMS, then finish as needed.

Export formats

STL · 3MF (mode-dependent, Pro for advanced 3MF)

Frequently asked questions

Which mode should I use?
Front-viewed art → ColorStack or FlatStack. Backlit photos → LithoStack. Flat logos/signs → FlatStack.
Can one tool do everything?
Each mode is optimized for a different physical result. Using the right mode saves slicing surprises.

Related resources

Filament painting for 3D printing

ColorStack mode builds color-layer topography from your image so thin filament layers optically blend into a full-color front-lit print—no manual CAD painting.

FlatStack flat multicolor prints

FlatStack is for flat color surfaces, not height-based lithophanes. Upload artwork and build a thin multicolor plate ready for STL or 3MF export.

Lithophane generator

LithoStack in ColorStack converts photos into printable lithophane heightmaps. Upload an image, preview the relief, choose a shape, and export STL without CAD.

OrcaSlicer multicolor 3D printing

OrcaSlicer handles multicolor projects from many printers. ColorStack 3MF exports are built to import with bundled printer profiles where available.

3MF vs STL for multicolor 3D printing

STL remains universal geometry. 3MF can package multicolor structure and slicer-friendly metadata. Choose based on your printer and patience for manual setup.