3+Tree

Exporting your design

Download your sign as print-ready files and understand what's in the ZIP.

When your sign looks right in the preview, click Export STL at the top right of the editor.

The export popover with filename, QR toggle and download button

The export options

  • Filename — what the downloaded file will be called. It's pre-filled from your sign's text.
  • QR code on back — adds a small QR code to the back face of the sign. Scanning it reopens this exact design in the editor, so the sign can be reprinted or edited later — even by someone who only has the physical sign. Turning this on stores your design online so the code has something to link to (see Saving & sharing).

Then click Download STL (.zip).

If the back QR can't be added

On very small or very thin signs there isn't enough room for a scannable code, and the editor will tell you so. And if the design can't be stored online at export time, your files still download normally — just without the QR code on the back.

What's in the ZIP

STL is the standard file format for 3D printing — every slicer and print service accepts it. Your ZIP contains one STL file per part of the sign, each positioned at exactly the right spot and height:

  • yoursign-background.stl — the sign's plate.
  • one numbered file per text line, named after its text — e.g. yoursign-01-warning.stl.
  • a file for the icon and/or QR code, if your sign has them.

Splitting the sign into parts is what makes multi-color printing easy: in your slicer you import all the files together as a single object and give each part its own filament color.

Exported STL files imported into a slicer, with each part as its own object

Next step: print it

The printing guide walks through importing the files, assigning colors and slicing — with screenshots from Bambu Studio, but the steps are similar in any slicer.

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