Card/Keychain w/ Custom Design and QR Generation and opt. NFC Cavity for 3D Printing

NFC chips and QR codes are powerful tools – they can share your socials or contact card, let guests tap to join your Wi-Fi, or even trigger automations with a single scan. However on their own, NFC chips don’t look great, and a paper QR code isn’t much better.

This add-on lets you design 3D-printable housings for NFC chips. You can add your own logos or icons (Wi-Fi symbol, social media logo, etc.), or use the built-in QR generator to put a backup code directly on the surface of the print.

• Versatile shapes – Cards, dots, or keychains with adjustable height, bevels, rounded corners, and optional magnet slots.
• SVG support – Import any SVG logo and turn it into an object on your housing, with the option to inset designs for flush multi-color prints.
• QR fallback – Generate QR codes for links, vCards, Wi-Fi details, or plain text and place them like any other logo.
• Magnet slots – Choose between hexagonal or circular cutouts, set width/height, and let the tool auto-adjust the housing height.
• NFC optional – Disable the NFC cutout to create solid cards or keychains without cavities.

1. Install and enable the add-on.
2. Open the NFC Cards tab in the N-panel (press N in the 3D Viewport).
3. Click Prep Scene to generate the base card and clear any interfering objects.
4. Choose shape, dimensions, and optional NFC or magnet cutouts.
5. Import an SVG logo or generate a QR code, adjusting scale and offsets as needed.
6. Export your customized housing as an STL ready for printing.

1. Import the STL into Orca.
2. Right click the object > Split > to Parts (not to Objects).
3. In the left panel, open the Objects tab (next to Process). You’ll see a list of numbered objects.
4. Right click object 2 > Change Type > set to Negative Object.
5. For objects 3 and up, right click > Change Filament Type > assign your second color.
6. Optional: If the design is inset, flip the STL 180° for a cleaner top surface.
7. Slice and scrub the slider to the layer just before the NFC cavity gets covered. Right click > Add Pause.
8. Re-slice and save/send g-code to your printer.

You need:
* Blender 4.2.0 or later

Manual install:
Download nfcCardGen.zip.
Drag and drop it into Blender, then enable the extension.
Or go to Edit > Preferences > Add-ons > Install from Disk*, select the zip, and enable it.

GNU GENERAL PUBLIC LICENSE Version 3, 29 June 2007

For questions, issues, or feature requests, please open an issue in the project repository or contact me at jack@clonecore.net.

• You can now add custom text and fonts!
• Control over size, character/word/line spacing, and text box controls
• Text positioning with X/Y offset
• Collapsible text panels in UI for clean organization
• File size is significantly reduced from 5.2MB to 600 kb
• Use "Quick Asset Saver" to save the card to much smaller library file for use in the addon.