How to Make a Leather AirTag Case: Pattern, Closure Options and Two Builds
An AirTag case is the highest-value hour in leathercraft: one scrap of vegetable-tanned leather, one snap or rivet, and a finished object people genuinely want to buy. This guide gives the exact pattern for Apple's 31.9 mm tracker, the window-vs-enclosed decision, and two complete builds — a keyring case and a bag-loop version.
Know your tracker before you cut
An AirTag is 31.9 mm in diameter and 8 mm thick. Every dimension below flows from those two numbers — and they matter even more for the new AirTag models, which keep the same footprint. Design the pocket with 0.5 mm of clearance all around: too tight and the leather stretches until the tracker falls out; too loose and it rattles.
Two designs, one decision
| Design | Visible window | Enclosed sleeve | Verdict |
|---|---|---|---|
| Look | Tracker face shows through a die-cut hole | Clean leather on both faces | Window for keyrings and gifts; sleeve for bags and luggage |
| Security | Tracker visible and removable | Tracker captive until unsnapped | Sleeve wins — a covered tracker is tamper-resistant |
| Difficulty | Medium — the hole must be perfectly centered | Beginner — no hole at all | Start with the sleeve, add the window on build two |
| Speaker | Unmuffled | Unmuffled — sound passes through 2 mm leather | Either is fine; lining with foam does muffle it, so skip lining |
Cutting list (both builds)
| Piece | Dimensions | Thickness | Notes |
|---|---|---|---|
| Case body | 75 × 45 mm with rounded ends (see pattern) | 2.0–2.5 mm veg-tan | Folded construction: wraps front, back and flap in one piece |
| Backing panel | 40 × 38 mm | 1.0–1.2 mm | Closes the pocket; skive the top edge to 0.8 mm |
| Loop strap (keyring) | 30 × 8 mm | 2.0 mm | For a 25 mm split ring |
| Loop strap (bag) | 55 × 20 mm | 2.0 mm | Wraps a bag strap up to 14 mm; riveted, not stitched |
Trace the body from a paper template: 75 mm long, 45 mm tall at the pocket end, tapering to a 30 mm flap with a 10 mm radius at the tip. Mark the fold line 42 mm from the tip end. The hole punch sizes for the snap and stitching holes are in the leather hole punch size chart.
Build one — enclosed keyring case, step by step
- Cut and case the leather. Cut the body and backing, dampen the fold line with a sponge, and crease it over an edge — a crisp fold is what makes a one-piece case read as professional.
- Skive the backing's top edge to 0.8 mm so the pocket mouth stays thin. The technique is in the skiving guide.
- Glue the backing inside the body on three sides with contact cement, leaving the mouth open. Adhesive choice is covered in the leather glue comparison.
- Punch the stitch holes with a 4 mm chisel around three sides, 4 mm in from the edge — the chisel-vs-iron differences are in stitching chisels vs pricking irons.
- Saddle stitch the pocket closed with 0.8 mm waxed polyester thread — the full stitch is taught in the saddle stitch tutorial.
- Set the snap. A Line 20 solid brass snap on the flap and body, set without a press exactly as shown in the snap setting guide. Test the flap length before punching: the snap should close with light resistance, not stretch.
- Attach the loop. For the keyring version, stitch the 30 mm loop into the fold seam. For the bag version, punch two 3 mm holes and set double-cap rivets through the loop and body.
- Finish the edges. Burnish to glass — the full process is in the edge burnishing guide. Two millimeter edges on a small case take under ten minutes.
Build two — the visible window
Cut a 30 mm circle in the body where the tracker face will sit. The clean way is a 30 mm punch from the punch size chart; the humble way is a drill-backed knife cut sanded round with a dowel wrapped in 400-grit. Back the window with a 0.5 mm scrap of transparent TPU glued inside, or leave it open — an open window holds the tracker fine at 31.9 mm in a 30 mm hole, since the leather's natural stretch grips it. Add the snap and loop exactly as in build one.
Closure choices compared
| Closure | Best for | Watch out for |
|---|---|---|
| Line 20 snap | Flap cases — the classic | Needs a reinforcement disc behind thin leather |
| Double-cap rivet + friction fit | Sleeve cases you open rarely | Rivets don't open — the tracker stays captive by design |
| Button stud | Tool-free opening, minimalist look | Needs a punch hole in the flap sized to the stud |
FAQ
Does the leather block the AirTag's signal?
No. Two millimeters of vegetable-tanned leather costs effectively nothing in Bluetooth range — real-world tests and Apple's own accessory guidance show full function through leather, fabric, and even thin wood. Only metal-lined or foil-backed cases cause problems.
What leather works best?
Vegetable-tanned shoulder at 2.0–2.5 mm. It holds the case shape and burnishes beautifully. Chrome-tanned leather is too soft — the pocket mouth stretches and the tracker works loose within weeks.
Can I make these to sell?
Yes, and they are a proven market-stall seller: material cost is under two euros and build time drops below an hour once the pattern is cut. Keep your hardware solid brass and say so on the price tag — it is the first thing returning customers ask about.
My flap won't stay closed. What's wrong?
Two usual causes: the flap is cut too short so the snap sits under tension, or the snap is set in leather thinner than 2 mm without a backing disc. Recut the flap 3 mm longer, or add a reinforcement disc — the fix is in the snap guide's troubleshooting section.
Conclusion
One scrap, one snap, one evening — the AirTag case is the build that turns leftover leather into something people pay for. When the offcuts still aren't used up, make the leather key fob or the braided lanyard to match, or browse all builds in Leathercraft Guides & Tutorials.
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