Slim Apple AirTag Card STL File User Guide

This guide is made specifically for this product.

Printing Guide

I. General Recommendations

  • This 3D print may be accomplished by a traditional single-filament FDM 3D printer, however, having access to a multi-filament printer like the Bambu Lab P1, X1, or A1 series with AMS can make the process slightly easier.
  • The recommended printing material is PETG. PETG-CF is not recommended.
  • This guide is based on the Bambu Lab P1P with AMS, however, most of the settings and instructions apply directly or could be easily applied to most other FDM 3D printers.

II. Slicer Settings

  • Click here to download the BambuStudio presets if you have a Bambu Lab Printer. Otherwise, here is a detailed list of slicer settings:
  • IMPORTANT: If using PLA as support for PETG using a single-extruder, multi-filament system (e.g. Bambu Lab AMS), set the following flushing volumes:
    • From PLA to PETG: 800 mm³
    • From PETG to PLA: 200 mm³
  • For the main AirTag shell and battery insert:
    • Printing material: PETG
    • Layer height: 0.08 mm
    • Initial layer height: 0.08 mm
    • Line width: 0.42 mm
    • Ironing: Top surfaces
    • Ironing pattern: Rectilinear
    • Ironing speed: 30 mm/s
    • Ironing flow: 8%
    • Ironing line spacing: 0.15 mm
    • Ironing inset: 0.21 mm
    • Wall loops: 2
    • Sparse infill density: 100%
    • Support: True

The following support settings are intended for PLA supports for easy removal. If you do not have access to a multi-filament 3D printer and cannot use PLA for supports, you can use the default support settings for your printer and experiment with it.

    • Support type: Normal
    • Support style: Grid
    • Support threshold angle: 1°
    • Remove small overhangs: True
    • Support base: PLA
    • Support interface: PLA
    • Support initial layer density: 90%
    • Support initial layer expansion: 2 mm
    • Support wall loops: 2
    • Support top Z distance: 0 mm
    • Support bottom Z distance: 0 mm
    • Support base pattern: Rectilinear grid
    • Support pattern spacing: 0.5 mm
    • Support pattern angle: 0°
    • Support top interface layers: 6
    • Support bottom interface layers: 6
    • Support interface pattern: Rectilinear interlaced
    • Support top interface spacing: 0 mm
    • Support XY distance: 0.4 mm
    • Support first layer gap: 0.2 mm
    • Don't support bridges: False
    • Independent support layer height: True
  • For card-shaped adapter and ridge adapter:
    • Printing material: PETG
    • Layer height: 0.16 mm
    • Initial layer height: 0.2 mm
    • Line width: 0.42 mm
    • Ironing: Top surfaces
    • Ironing pattern: Rectilinear
    • Ironing speed: 40 mm/s
    • Ironing flow: 30%
    • Ironing line spacing: 0.2 mm
    • Ironing inset: 0.21 mm
    • Wall loops: 2
    • Sparse infill density: 50%
    • Sparse infill pattern: Grid
    • Support: False

    Building Guide

    I. Required Tools & Materials

    1. Soldering iron.
    2. Heat gun or hair dryer.
    3. Hot glue gun.
    4. Small flat head screwdriver.
    5. Box cutter.
    6. Flush cutter pliers.
    7. 15 cm (6 in) of 20 gauge (0.8 mm diameter) bare copper or stainless steel wire (Copper recommended).
    8. For Ridge conversion kits only: 7x M2 heated/threaded inserts, 3 mm height, 3.2mm outer diameter.
    9. For Ridge conversion kits only: Deburring tool (optional).
    10. For Ridge conversion kits only: Large sharpie (optional).
    11. Safety goggles.
    12. CR2025 Battery (NOT CR2032).

      II. Build Video

      III. Troubleshooting & Tips

      • Click here to download the top vinyl sticker if you have a Cricut machine.
      • Some coin-cell batteries (e.g. Duracell and Energizer) bought at retail may have a bitter coating on them, which prevents a proper connection. Please try to look for batteries that specifically do not have a bitter coating, or use 99% isopropyl alcohol to rub off the bitter coating.
      • If you find the speaker volume to be too low, try rotating the speaker magnet in place and testing the speaker volume until you find the "sweet spot". This is not always the same orientation as it was before the modification.
      • If you break one of the pads, please refer to minute 8:26 in the video for a workaround.
      • Using a multimeter in continuity mode, after bridging the top two circular pads as seen in minute 15:58 in the video, the left and right copper wires should test positive for continuity.
      • Using a multimeter in continuity mode, the middle copper wire and any one of the ground points seen here should test positive for continuity.
      • Using a multimeter in resistance mode, probing the middle copper wire and either left or right wire should indicate a resistance of 3 MΩ or more. If the resistance is too low, the AirTag will not power on, which indicates a short circuit. In that case:
        • Ensure that the two top circular pads seen in minute 15:58 in the video are not bridged with the bottom pad.
        • Ensure that the three connections to the copper wires are all isolated and no bridges are present.
        • Verify the rest of the board for damage or accidental bridging.

      IV. For Ridge Wallet Kit Only

      • De-burring sloped edge:

      • Inserting threaded inserts:

      • Cutting excess hot glue: