ColdTi - Titanium Bitcoin Seed Plates for Ultra-Secure Crypto Seed Phrase Storage (2 Plates, Punch Set & Seals) - Premium Seed Phrase Metal - Alphabetic Punch Set Included

Love the concept of a recovery seed STAMPED into titanium, a metal which won't rust or corrode. And a melting point over 3000°F. Average temp of a house fire is 1100°F, with peaks between 1,200 and 1,800°F. Meaning the plate would survive a fire even if it wasn't locked in a safe. One minor complaint is the really tiny punch set included with the kit. Almost too small to read (2mm??), especially if you don't use good technique while doing it. I practiced on some scraps of metal first, decided it was a lost cause. Ended up using a 3mm (1/8”) set which was much more readable. But the etched blocks spacing would easily allow a 4mm (5/32”) or even 5mm (3/16") . (See attached picture, their 2mm on top, my own 3mm below.) Suggest purchasing only the plates, and get a larger punch kit elsewhere. Important -When you actually punch the letters, use a solid smooth metal backing plate for best results. Bench block, jewelers block, anvil, metal vice, or anything similar. Attempting to do this with a wood backing (or rubber, concrete, carpet, etc) is going to result in a warped plate and dimpled characters.

Put this on a hard surface, and give it a semi hard tap (not real hard) with a regular carpenters hammer. It will imprint nicely. You don't need a jewelers block, you don't need a sledge hammer. If you use a sledge hammer it WILL bend the metal. Came out great. I had 24 words so I printed out the alphabet on a piece of paper, laid each of the metal letters on top of the corresponding letter and I was able to go complete it very quickly.

It's a good option to store your 12- or 24-word BIP39 seed phrase. It is sure durable and I guess, it will withstand all imaginable disasters. It takes some time to punch in words in and I recommend doing it on a leveled and hard surface. Do not do it on a wooden table! It needs to be concrete or hard stone. The only downside is that on the backside you will see dents were the letters are, but it's not readable. Also, the hole plate was slightly bend after the work was done. I had to hammer it back a little to close it again. For the prize it is a very good option.

As advertised

Leah package arrived busted and broken. The metal punches were all over the place in the packaging for the plates was torn open.The plates are OK, much smaller than I thought.The punches, however, our way smaller than I thought and appeared to be very cheap. There’s nothing to denote what letter they are. You have to squint your eyes and look at the punch end and try to figure out what letter it is. I can see why there are so many complaints about how long it takes to punch your cards. And this is also why people make mistakes doing it.I recommend buying a better punch set and just getting the plates if you are OK with small plates. Or find a different manufacturer altogether.

Ordered 3 of these and just stamped my first one tonight.Converted my BIP-39 seed to numbers. Check and triple checked, then stamped them in slowly. Then checked the stamp against the seed again. Remember, ONE good hit, not a bunch of small ones.I ordered a full alphabetic stamp kit, a 3lb club hammer and a steel stamping block of steel.I had to line up and re stamp a few characters due to off angles or strikes, but you can't tell. It was fairly easy to do. I was able to line up the stamp perfectly again if it needed just a little re strike. You can see the slightest mark on the back side of the plate under the stamp. It looks like a tiny block where someone maybe rubbed a little steel wool or something and in no way can you tell what the characters are on the other side.My plates came out PERFECTLY flat. Reading a lot of reviews here with people's plates curling during stamping. My guess is that they weren't using a hard steel plate behind the ColdTi strip. I bought a metal stamping block here on Amazon for $17. Totally worth it.My rating for this is very high, because to get this kind of high melt temp metal, screened with a nice grid for your seed words for $39 seems very reasonable.If I had to nitpick, I wish I could make my screw hardware pull tighter and one of my screws came with part of it missing the blacking. Used some Birchwood Casey Super Black and it looks great.I would recommend to anyone needing to get rid of some paper wallets and wanting another layer of loss protection. I'm glad that I bought them.

There are just a few enhancements that would elevate this item to a 5-star rating:- The punch set should feature additional markings, preferably on the side, to improve letter identification.- The plastic screws should be replaced with metal ones, as they are prone to melting in a fire, potentially compromising the seed phrase.- The steel card itself should be thicker to prevent the punched letters from protruding on the reverse side.Aside from these points, it serves its purpose well. However, the plastic screws need to be swapped for metal ones.I will change my rating if metal screws are sent.

It was not super easy to hammer all those letters, but overall it is exactly what you need and at a really reasonable price.