Keychain
Print a QR keychain
Switch the object to keychain. The ring hole is part of the mesh — no supports if you print flat.
Looks good to scan
How to print the 3MF
- Open it in Bambu Studio, Orca, or PrusaSlicer.
- Filament 1 = Base · filament 2 = QR.
- 0.16–0.20 mm layer · 0.4 mm nozzle · no supports.
Live preview
Scan this preview with your phone.
Preparing 3D preview…
Drag to rotate · scroll to zoom
How to use it
Any payload
A menu URL or vCard both fit. Keep the module size large enough to scan.
Object = keychain
The hole is already cut. Do not scale below the warning.
Dual color
3MF maps two filaments. STL is one body if your slicer prefers that.
FAQ
How small can it be?
If the warning says modules are small, scale up. Phones need a few millimeters per module.
Supports?
Print the keychain flat. The hole does not need supports at 0.16–0.20 mm.
One color?
Export STL and paint in the slicer, or print 3MF with the same filament twice.
Will a logo still scan?
A small center logo is fine. A huge mark will fail — watch the hint.