Blockmit Washer Jig Europe — Two Jigs, €7, Ships from the EU
Paper burns at 233°C. House fires exceed 600°C. A seed phrase written on paper is one disaster away from permanent Bitcoin loss. The Blockmit jig lets you stamp every word of your seed phrase into steel washers that survive fires, floods, and decades of storage — in under an hour, with tools from any European hardware store.
Two Blockmit jigs included. €7.00 with VAT. Shipped from Europe — no customs, no import fees, no waiting three weeks from North America.
Table of Contents
- Why Paper Seed Backups Fail
- What Is the Blockmit Jig?
- How It Works
- What You Need — EU Hardware Store Guide
- Metric Sizing — Important for EU Buyers
- How It Compares to Other Options
- What’s Included
- Why CryptoCloaks EU
- FAQ
- Order Your Blockmit Jig
Why Paper Seed Backups Fail
Most Bitcoiners write their seed phrase on paper when they set up their wallet. Most never think about it again — until something goes wrong. Paper is the weakest possible seed backup medium:
- Burns at 233°C — house fires regularly exceed 600°C
- Water damage destroys it in hours
- Ink fades over decades
- A spilled glass can end your Bitcoin ownership permanently
Metal doesn’t burn. Metal doesn’t flood. Metal doesn’t fade. A seed phrase stamped into steel washers with a Blockmit jig survives a house fire, a flood, 50 years in a buried container, and is still readable the day you need it.
For a full overview of why physical metal backups matter, Bitcoin.org’s official wallet security guide covers the risks in detail.
What Is the Blockmit Jig?
The Blockmit jig is a precision alignment guide — a small 3D printed tool that holds a 24mm metal washer in place while you stamp letters and numbers into it with a punch and hammer. Each position is spaced and aligned so your stamped characters come out clean, readable, and consistent across every washer.
Without a Blockmit jig, hand-stamping into washers produces crooked characters, uneven spacing, and overlapping letters that become unreadable under pressure. The jig eliminates all of that. One washer per seed word. 12 or 24 washers for a complete backup. Done.
The Blockmit jig Europe edition is the same design trusted by thousands of Bitcoiners worldwide — printed to spec and shipped from within the EU by CryptoCloaks EU.
How It Works
- Place a 24mm M8/M10 metal washer into the Blockmit jig slot
- Position your 3mm letter punch on the first alignment spot
- Strike firmly with a 500g–1kg steel hammer
- Advance to the next position, repeat for each character of your seed word
- One washer = one seed word. 12 or 24 washers = complete backup
- Store in a fireproof safe, safety deposit box, buried steel container, or split across multiple secure locations
Total time for a full 24-word seed backup: approximately 45–60 minutes. Total material cost: under €30. Protection: permanent.
Full visual guide: DIY Seed Phrase Backup Tutorial — Estudio Bitcoin
What You Need — EU Hardware Store Guide
Everything you need to use the Blockmit jig is available at hardware stores across Europe. This is the complete EU sourcing guide — no US links, no customs, no confusion.
| Item | Spec | Where to Buy in Europe |
|---|---|---|
| Metal washers | 24mm OD — M8 or M10 DIN 9021 steel washers | OBI, Hornbach, Bauhaus (DE/AT/CH) · Leroy Merlin (FR/ES/IT) · Brico/Praxis (NL/BE) · B&Q (UK) · Or Amazon.de |
| Letter/number punch set | 3mm only (stores also sell 4mm and 5mm — do not use those) | Search: “Buchstabenschlagstempel 3mm” (DE) · “jeu tampons lettres 3mm” (FR) · “letter stamp set 3mm” (UK) · Or Amazon.de · Amazon.co.uk |
| Steel hammer | 500g–1kg, standard steel hammer | Any hardware store — you almost certainly already own one |
| Hard surface | Concrete floor, steel plate, or anvil | A concrete garage floor works perfectly — no purchase needed |
Total setup cost including washers and punch set: approximately €20–35 across Europe. Everything except the jig is standard hardware stock at any DIY chain on the continent.
Metric Sizing — Important for EU Buyers
Most English-language guides for the Blockmit jig say “1/8 inch stamps” and “1-inch washers.” These are US imperial measurements. For EU buyers, here’s what that means in metric:
- 1/8 inch = 3mm — buy 3mm punch sets only. Stores sell 4mm and 5mm too — those are too large and won’t fit the jig alignment correctly.
- 24mm OD washers — this is the metric spec. In German: “Unterlegscheibe M8, DIN 9021, 24mm Außendurchmesser.” Standard stock everywhere.
No conversion needed — just use those two specs at any European hardware store and you have everything required to use the Blockmit jig Europe edition.
How It Compares to Other Options
| Option | Price | Difficulty | Ships from EU | Metal backup result |
|---|---|---|---|---|
| Blockmit Jig (CryptoCloaks EU) | €7 + €20-30 hardware | Easy — 1 hour | ✅ Yes | ✅ Full metal backup |
| Steel plate alternatives (e.g. KryptoStahl) | €60–120 | Medium | ✅ Some EU options | ✅ Full metal backup |
| Seedor Safe (CryptoCloaks EU) | €80+ | Very easy — no stamping | ✅ Yes | ✅ Pre-engraved capsules |
| Paper backup | €0 | Instant | N/A | ❌ Burns, floods, fades |
| US sellers on Etsy/Amazon.com | €5–15 + customs | Easy | ❌ No — customs risk | ✅ Full metal backup |
The Blockmit jig is the most affordable entry point to a permanent metal seed backup. If you want zero stamping effort, the Seedor Safe is the step up. If you want maximum DIY control for minimum cost, the Blockmit jig Europe edition is unmatched at €7.
What’s Included
- 2x Blockmit washer jigs — two included in case one is damaged during stamping, or to make two complete backups
- VAT included in the €7.00 price
- Washers, punch set, and hammer NOT included — see EU sourcing guide above
Why CryptoCloaks EU
The Blockmit jig is available from a small number of sources in Europe. CryptoCloaks EU gives you two jigs (not one), ships from within the EU with VAT included, and is backed by a team of Bitcoiners who have been building self-custody tools since 2017.
- Two jigs — every other EU source sells one. We sell two, for €7.
- No customs — shipped from within the EU, nothing added at the border
- VAT included — €7.00 is the complete price
- Bitcoiner-built — CryptoCloaks has been making self-custody tools since 2017. We use what we sell.
- EU hardware guide included — we tell you exactly what to buy at OBI, Hornbach, or Leroy Merlin, in metric specs, with no imperial conversion required
See the full CryptoCloaks EU Bitcoin Goodies range for more self-custody tools and Bitcoin accessories.
FAQ
What size washers does the Blockmit jig use?
24mm outer diameter — M8 or M10 DIN 9021 metric washers. Available at every hardware store in Europe. In German: “Unterlegscheibe M8 DIN 9021.” You can also order on Amazon.de.
What size punch set do I need?
3mm only. Hardware stores sell punch sets in 3mm, 4mm, and 5mm. Only 3mm fits correctly in the Blockmit jig alignment positions. Do not buy 4mm or 5mm.
How many washers do I need?
One washer per seed word. 12 words = 12 washers. 24 words = 24 washers. At €0.10–0.30 per washer from a hardware store, material cost for a full backup is under €7. Most security-minded Bitcoiners stamp two complete sets and store them in separate locations.
Is VAT included in the €7.00 price?
Yes. All CryptoCloaks EU prices include VAT. No surprise charges on delivery.
Is the jig itself fireproof?
No. The jig is a 3D printed plastic tool used to stamp the backup — it is not part of the backup. The steel washers you stamp are what survive fire and flood. The jig is just how you stamp them accurately.
Can I use this for a 24-word seed phrase?
Yes. Use one washer per word. For a 24-word seed phrase, stamp 24 washers. The two jigs included mean you can work through the full set without stopping.
Should I store all my washers in one place?
No. Split your backup across at least two secure physical locations — a home safe, a safety deposit box, a trusted family member’s address. The Blockmit jig makes it easy to stamp two complete identical sets for exactly this reason.
Order Your Blockmit Jig — Shipped from Europe
Two Blockmit jigs. €7.00 incl. VAT. Ships from the EU. The most affordable metal seed backup tool available to European Bitcoiners — with a full EU hardware sourcing guide, metric specs, and no customs headaches.
Order today. Stamp your seed phrase into metal this weekend. Your Bitcoin deserves a backup that lasts longer than paper.
