pull down to refresh

Doing a bit of research on my favorite kind of steel backup. The humble steel washer stack of course.
I've tried different sized washers and have found 10mm x 24mm to be the sweet spot.
What's your preferred steel backup washer size?
reply
Sick. I wish steganography was used a lot more in bitcoin. It's amazing tech.
reply
I prefer washers for M3 screws with 1mm letters, as they are small and easy to hide. Here is the jig for these: https://www.thingiverse.com/thing:6023492
reply
They look smaller than usual.
Have you ever had trouble fitting a longer word in it?
reply
The jig features 12 positions. I numbered all washers with two digits to ensure the right order, so words with 10 letters do fit. Keep in mind that you just have to record the first 4 letters of each seed word to create a valid backup. Full words of course do look nicer.
reply
Right, it looks nice & compact.
I'm surprised how small they are!
reply
Wouldn't this also depend on the size of a person's letter punches?
reply
It might. I haven't seen much variation in the letter punches.
BIP39 words are no more that 8 letters so at most you'd be using 10 characters on a washer.
reply
Do you use a 3D printed holder for when punching?
I've found that when having to punch the same letter more than once, the end result gets rather messy.
reply
I haven't so far, but I think it would make it easier & neater too.
I have an old iron shoe horn as a base. With the hammer I go one light hit, then one heavy. So far so good.
reply
Just print a bunch of SeedQRs, add passphases or multisig, you dont need fancy steel backups, its so unnecessary and Expensive...
Stack sats
reply
Steel washers are not expensive or fancy.
But go ahead
reply
I mean, it’s just a steel washer, @Onions. What could it cost? $10?
reply