The bearded bitcoin wizard, Jameson Lopp did a review of this: https://jlopp.github.io/metal-bitcoin-storage-reviews/reviews/safu-ninja/
Do your homework before you ape into any hardware seed storage https://jlopp.github.io/metal-bitcoin-storage-reviews/reviews
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Lopp review neglects to mention the necessity for stamper letter pegs and a hammer in his parts list.
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What if you drop this thing while the cap bolt is unattached? Bye bye, Bitcoin.
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You have to number them.
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