The Blockmit is a 3D printed mould to make stamping your own steel Bitcoin BIP39 mnemonic seed phrase backup using cheap steel washers and a nut and bolt and considerably cheaper than seed phrase plates.
Suggested items to build your steel passphrase backup:
Steel washers, M8 (8mm ID, 24mm OD, 2mm thick) x 24
Steel bolt, M8 (8mm x 70mm) Hex Bolt x 1
Steel knurled thumbnut, M8 (8mm ID, 24mm OD) x 1
The tools you will need are (or similar):
Hardened steel punch, 3mm with 6mm x 6mm
Please watch the following video to see how to use the Blockmit:
For more information, please see:
Make your cold wallet with washers | Blockmit.com
This model is printed with the following properties:
Printer: Prusa MK3S+
Resolution: 0.10mm (DETAIL)
Filament material: PLA
We ship worldwide.