Decals.

Decals projects flat artwork onto the model's surface from your current view, then cuts the mesh along the artwork's outlines so every shape and letter becomes its own colour region. Slicers draw clean perimeter loops around real mesh edges, so the print comes out with the same crisp edges the slicers' own text tools get — but Decals does it with any image, not just text.

Two sources, one flow: the Image tab takes a logo or photo (PNG and JPG, transparency respected), the Text tab renders any words you type, in any ink colour, bold or regular. Every colour in the artwork is matched to a printable filament and added to your palette automatically.

The mesh under the box is refined before the stamp so fine detail has triangles to land on. Undo removes the stamp and the added triangles together.

• A logo on a print — club badge on a trophy, maker mark on a case, brand on a stand.
• Names and labels — a kid's name on a toy, bin labels on organizers, dates on gifts.
• Artwork that would be a CAD detour otherwise — the slicers' text tools can't put an image on a model.

1. Open Decals from the left rail and pick Image or Text.
2. Load your artwork. Choose an image file, or type your words and set the ink colour and bold.
3. Place the box. Drag the box to move it, the corner handle to resize, and the ⟳ grip above it to rotate — hold Shift to snap to 15°. Orbit the model by dragging outside the box.
4. Check the options. Drop background keeps a full-bleed icon's surround off the model, Auto-add colors pulls the artwork's colours into your palette, and Sharpness sets how finely the mesh is refined under the box.
5. Hit Stamp. The artwork is cut into the mesh and painted. Not right? Ctrl+Z removes the whole stamp.
6. Export as usual. The decal ships in the Standard 3MF as solid colour regions and slices crisp.

• Watch the size warning. If the artwork's details are thinner than about two print lines at the model's real size, Layerpaint tells you after the stamp. A 0.4mm nozzle can't draw a 0.3mm stripe — scale the model up or use simpler artwork.
• Leave Solid decal on. It exports each colour region as a thin solid insert — the same mechanism slicers use for embedded text — which is what keeps edges sharp in the sliced result.
• Simple, high-contrast artwork prints best. Flat-colour logos beat photographs; the artwork is quantised to printable filament colours.
• Pairs with Symmetry. With a mirror axis on, the stamp lands on both sides at once.