Cryptosteel is good but I watched some test reviews about it's safety during vibration, impact, temperature and corrossion and C300° degree temperatures and I was not very impressed or convinced about storing my seedphrase on tiny pieces of metal.

Plus most people probably used a credit card or a digital device to purchase the Cryptosteel and I wanted to avoid leaving a digital trail behind including expensive solutions which would end up being unsustainable on the long-run; I decided to go for the hardware solutions such as stainless steel washers and manual stamping or engraving tools. Stamping is by far the faster solution; in 30 minutes you can build a seedphrase backup in the privacy of your home, no digital trail, no intermediaries and no expensive procedures.