This isn’t just a coin—it’s a smart coin.
A fully 3D printable challenge coin with a hidden NFC chip, designed with a pause-in-print feature so the chip is sealed inside the model.
What makes this one different:
- Embedded NFC (hidden inside the print)
- Pause at layer → drop in chip → resume print
- Fully sealed coin (no glue, no snap needed)
- Clean two-tone design (perfect for AMS or manual swap)
How it works (super simple):
- Start the print
- Printer pauses automatically at the chip layer
- Drop in your NFC chip (NTAG213/215/216)
- Hit resume
- Printer seals it inside forever
What you can do with it:
- Tap → open your website
- Share contact info instantly
- WiFi auto-connect coin
- Smart home trigger
- Event badge / digital business card
- Or… cause chaos with a perfectly timed prank
Recommended Print Settings:
- Layer Height: 0.16–0.2
- Walls: 3–4
- Infill: 15–20%
- Material: PLA (easy) / PETG (durable)
Important Tips:
- Program your NFC chip BEFORE inserting
- Place chip flat and centered when paused
- Don’t move the bed while paused (keep alignment perfect)
- If your slicer doesn’t auto-pause:
- Add a pause at height manually in your slicer
Why this design is cool:
Most NFC prints use glue or slots…
This one literally prints the tech inside the object.
It feels like a normal coin—but it secretly does something.
If you print one, drop a make
Curious to see what people program these to do.
May the 4th be with your prints.
ZeroLayer
