Robust Crypto Seed Storage Capsule (Up to 20 Words) & Key Fob Holder
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Perfect for securing your Bitcoin or hardware wallet backup!
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Model information
- Source
- Printables
- Category
- Computers
- License
- Creative Commons — Attribution — Noncommercial — Share Alike
Just a clean, heavy-duty way to back up your crypto seed phrase. This is a 3-piece design built to hold up to 20 words (perfect for BIP39/standard hardware wallets).
How the 3 pieces work together:
The Core: A numbered inner organizer (slots 1–20) where you stack your letter tiles. The numbering ensures nothing gets mixed up.
The Container: The core slides right into this middle sleeve, sealing your full seed phrase inside away from dust and light.
The Outer Shell: A tough outer tube that slides over the container and locks the whole assembly together so it can't accidentally open.
Tip: For real peace of mind, use DIY stainless steel or titanium letter tiles inside this core. That way, your actual seed is fireproof and waterproof.
As a bonus, I threw in a matching key fob holder. It has a recess for a metal accent plate—great for labeling your hardware wallet keys or just using as a cool keychain.
Features:
3-Piece Lockup: Core + Container + Locking Shell.
Holds 20 Words: Numbered slots (17–20 are visible at the top in the photos) so you don't lose track of the order.
Print-Friendly: Designed to print without supports if oriented correctly.