Do you have a 3D printer? Then you can print yourself this washer stamping jig, the BitJig Free, you will need an anvil to stamp the washers on it. Download the .zip with the .STL files. The perfect device to start engraving your recovery phrases for Bitcoin or Crypto.

BitJig Free
€0.00
BitJig Free – Print your own stamping jig. Download the .STL files and start engraving your seed phrase on M8 washers.
| Language | English |
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Carles –
The space for inserting metal stamps is 5 mm, and it’s very difficult to find stamps that fit. I haven’t found any yet.
HideYourKeys (store manager)–
Hi Carles,
We noticed that you downloaded the free BitJig model, but it didn’t quite work for the typical 6mm stamps. We double-checked the original model and saw that the hole diameter was 6.2mm, which should generally fit — though it can depend on your printer’s tolerances.
Just in case, we’ve gone ahead and created an updated version with a 6.4mm hole to give you a better fit and a smoother experience. It’s attached here for your convenience, and we’ve also updated the version on our website.
We hope this one works perfectly for you! Let us know if you have any questions or need further tweaks.
Carles –
Very quick response and solution.
Jason –
Do you have a version with 12 slots (6 above and 6 below)?
HideYourKeys (store manager)–
Here you go 😉
https://hideyourkeys.io/product/bitjig-free-12-slots/