# Printables draft — MakeJoy NFC Pocket Fidget v4.2

## Listing fields

- **Title:** MakeJoy NFC Pocket Fidget — Supportless Clicker
- **Category:** Gadgets / Other Gadgets
- **Tags:** `nfc`, `fidget`, `clicker`, `ntag215`, `bambu-lab`, `ams`, `supportless`, `parametric`, `cadquery`
- **License:** Creative Commons Attribution 4.0 International (CC BY 4.0)
- **Attribution name:** MakeJoy Labs
- **Attribution URL:** https://makejoylabs.org/creator/nfc-pocket-fidget/

## Short summary

A pocket-size printed thumb-wheel clicker with a writable 25 mm NTAG215 NFC tag. Scan the phone/NFC side to open any URL you program into the tag.

## Description

The MakeJoy NFC Pocket Fidget combines a tactile printed clicker with a writable NFC tag. The shown prototype is programmed to open `https://makejoylabs.org/`, but you can write any appropriate URI record supported by your tag and phone.

The enclosure is 52 × 46 × 12 mm. It has a 25.8 × 1.10 mm internal tag pocket designed around the purchased nominal 25.0 × 0.8 mm adhesive NTAG215 discs. Measure your own tag before printing: supplier thickness and adhesive layers vary.

Revision 4.2 includes:

- build-plate-backed bearing pedestals on both shell halves;
- reinforced 3.2 mm wheel axle and captured hubs;
- integral front faces, so there is no loose art plate to fit;
- glue-assisted snap clips with a small fit coupon;
- a corrected side-facing phone/NFC symbol;
- a blank front, a full-color MakeJoy front, and a three-color `MakeJoyLabs.org` + `Create more. Scroll less.` front for one AMS or AMS Lite;
- editable CadQuery source, STEP solids, oriented STLs, and Bambu 3MF files.

The current photographs show a working printed prototype and an NFC scan opening the MakeJoy Labs website. Fit still depends on material, calibration, and the exact NFC disc, so print the snap-fit coupon and one complete unit before producing a batch.

This is an independent MakeJoy Labs design. References to Bambu Lab printers and AMS hardware describe tested print targets only and do not imply endorsement.

## What to print

Choose one front:

- `front_shell_integrated_blank.stl` — unbranded, single-color front;
- `front_shell_url_motto_precolored.3mf` — three-color production front for one AMS/AMS Lite;
- `front_shell_integrated_art_precolored.3mf` — full MakeJoy palette; six logical colors, so it needs filament changes or more than four loaded slots.

Then print:

- `back_shell_multicolor.3mf` (or the matching back shell and icon STLs);
- `thumb_wheel.stl`;
- one PETG spring: start with `click_spring_light.stl`;
- `snap_fit_test_male.stl` and `snap_fit_test_female.stl` before the full enclosure.

The complete `MakeJoy-NFC-Clicker-CAD-v4.2.zip` also includes STEP files, the full assembly STEP, source code, both spring strengths, and the other front variants.

## Print settings

Designed around a stock 0.4 mm nozzle on a Bambu Lab A1 or X1C.

| Part | Material | Layer height | Walls | Infill | Orientation |
|---|---|---:|---:|---:|---|
| Back shell + icon | PLA or PETG | 0.20 mm | 4 | 20% | Exterior/icon face on plate |
| Integrated blank front | PLA or PETG | 0.20 mm | 4 | 20% | As exported |
| Integrated art/text front | PLA | 0.20 mm | 4 | 20% | Supplied 3MF; face-down |
| Thumb wheel | PLA or PETG | 0.16–0.20 mm | 4 | 35% | Flat circular face on plate |
| Click spring | PETG | 0.16 mm | 4 | 100% | As exported |

- **Supports:** none expected in the supplied orientations. The v4 bearing pedestals, standoffs, snap sockets, and integral fronts were designed to begin on the build plate or use printable transitions. Check the slicer preview for your profile before printing.
- **Build plate:** smooth PEI for the cleanest exterior faces, or textured PEI for a matching texture.
- **Tolerance check:** print the snap-fit coupon first. If necessary, tune `PRESS_HOLE_D`, `SNAP_BARB_D`, or `SNAP_CAPTURE_D` in the included CadQuery source.

## Hardware

- One nominal 25 mm × 0.8 mm writable adhesive NTAG215 disc
- A phone capable of writing and reading that NFC tag type
- Optional thin bead of glue for permanent shell closure

Keep small printed parts and the NFC disc away from children who may mouth or swallow them. This is a maker project, not a certified children's product.

## Assembly

1. Print and test the male/female snap-fit coupon.
2. Write a URI record to the NFC tag and test it. Do not permanently lock the tag yet.
3. Place the tag adhesive-side-down in the circular pocket inside the back shell.
4. Slide the wheel over the printed axle with the teeth facing outward.
5. Fit **one** PETG spring over the two locating pins. Start with the light spring.
6. Dry-fit the shells and test the wheel.
7. For permanent assembly, separate the shells and add a thin glue bead around the inner perimeter. Keep glue away from the wheel, spring, snap posts, and NFC tag.
8. Align all four clips and press the front shell evenly until the barbs click into the sockets.
9. Test the NFC read from the phone/signal side on multiple phones. Permanently lock the tag only after everything works.

## License and remixing

CAD, mesh files, and documentation are released under **CC BY 4.0**. You may share and adapt them, including commercially, with attribution to MakeJoy Labs and a link to the license. The license does not grant trademark rights or imply endorsement by MakeJoy Labs.

License: https://creativecommons.org/licenses/by/4.0/

## Suggested gallery order

1. `prototype-hero.webp` — working physical prototype (cover image)
2. `nfc-proof.webp` — successful NFC scan proof
3. `parts-flatlay.webp` — printed parts and 25 mm tag
4. `assembled-cad-render.png` — assembled CAD view
5. `exploded-cad-render.png` — assembly layout
6. `makejoy-nfc-fidget-assembly.mp4` — short assembly animation, if Printables accepts the video format

## Upload files

Primary package:

- `/Users/matthewvaldez/Documents/MakeJoy-NFC-Clicker/MakeJoy-NFC-Clicker-CAD-v4.2.zip`

Useful individual 3MF uploads:

- `/Users/matthewvaldez/Documents/MakeJoy-NFC-Clicker/MakeJoy-NFC-Clicker-CAD-v4.2/exports_v4/bambu/front_shell_url_motto_precolored.3mf`
- `/Users/matthewvaldez/Documents/MakeJoy-NFC-Clicker/MakeJoy-NFC-Clicker-CAD-v4.2/exports_v4/bambu/back_shell_multicolor.3mf`
- `/Users/matthewvaldez/Documents/MakeJoy-NFC-Clicker/MakeJoy-NFC-Clicker-CAD-v4.2/exports_v4/bambu/front_shell_integrated_art_precolored.3mf`

## Review notes before publishing

- Confirm whether the listing category offered by Printables matches “Gadgets / Other Gadgets.”
- Confirm the title and the cover image crop.
- Keep the post in draft until Matthew reviews it.
- Do not claim certification, endorsement, guaranteed phone compatibility, or guaranteed support-free output on every printer/profile.
