FLAT – SINGLE-SIDE
Flat Image to STL
Upload an image and get a clean, flat multi-colored STL file – ready for keychains, ornaments, wall art, or lightboxes.
How it works
- Upload a clean image with distinct color regions
- Adjust size and thickness
- Preview the color layers
- Export your STL, pick colors in your slicer, and slice as usual
Detailed Instructions
Choosing your image
- Bold graphics with a handful of distinct colors work best — busy or gradient-heavy images make color detection messier.
- SVG is the best choice if you have it — logos, wordmarks, and vectorized art scale to any size with no loss of sharpness. PNG works well too, especially for photos or anything without a vector source — just start from the highest resolution you have.
Adjusting the tool — panel by panel
Detail
Controls how many pixels make up the image internally — think of it like sharpness, not physical size. 500px is a solid default. Push it to 800–1000px for fine detail, or lower it for a quick test render. This does not change your final print size — that’s set separately in Export.
Background Removal
If your image doesn’t already have transparency, this removes a solid background color. Adjust the Tolerance slider if fringe/edge artifacts remain — raise it if background bits are left behind, lower it if too much of your actual image is getting removed.
Cut Interior Regions
For enclosed gaps the background removal can’t reach (like the hole in a letter “O” or “A”). Turn on the cut tool, then click directly on the gap in the Original image to punch a real hole through it. Click a cut again to undo it.
Color Detection
Set how many distinct colors to detect (2–10), matching the actual number of colors in your design, then click Detect Colors. Each detected color becomes its own swatch — click any swatch to fine-tune that exact color, or uncheck a color to exclude it from the final export.
Export Settings
- Base thickness — the solid base plate thickness in mm (the “body” of the piece). Set to 0 for flat tiles with no base.
- Image (top) — thickness of the color layer sitting on top of the base, in mm.
- Base color — which detected color forms the solid base (defaults to your most dominant color).
- Min detail — removes tiny specks/noise below this size (helpful for cleaning up JPEG artifacts).
- Min line width — thickens any design line thinner than this value so delicate strokes actually survive printing.
- Print size — the longest side of your finished print, in mm. This is your actual final size — import into your slicer at 100%, don’t resize there.
Click Generate & Download when you’re ready — you’ll get either a single STL, or a ZIP with one STL per color if multiple colors are enabled.