In this video we show how to punch numbers into ColdTi titanium cold storage plates.
The BIP 39 number list can be found here:
https://github.com/bitcoin/bips/blob/master/bip-0039/bip-0039-wordlists.md
An inexpensive 2.5mm number punch set can be found on Amazon here:
http://a.co/029bKOF
The jewler's block can be found on Amazon here:
http://a.co/7z4PHn3
A suitable mallet here:
http://a.co/iFoFRoB