What it is
A 3D printed fridge magnet commissioned by GingerWallet as a promotional item for Bitcoin Prague 2026. Designed from scratch, prototyped, then produced in a run of 100 units. Modeled in Fusion 360, sliced and printed on a Bambu Lab printer.
The design
The brief was open: create something that communicates CoinJoin visually. The result is an angular, circuit-board style magnet that maps the privacy transaction directly onto the physical object.
- Matte black base plate
- Central raised GingerWallet logo
- Bitcoin coin inputs on the left, identical outputs on the right
- Angular gold transaction traces connecting them
- Large
COINJOINlabel - Smaller
gingerwallet.iotext - Green leaf accent
The layout is not decorative — it’s a diagram of how CoinJoin works.
From concept to production
- Received the original GingerWallet STL reference and brand assets
- Multiple design directions explored, circuit-board style selected
- Full parametric model built in Fusion 360
- Prototype prints evaluated
- Bambu Studio production plate laid out for batch printing
- 100 units manufactured for Bitcoin Prague 2026
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Design files
The repository includes the Fusion 360 source (.f3d), Bambu Studio production files (.3mf), original STL reference, and visual concept boards. Published under a proprietary license — contact for manufacturing or licensing inquiries.