A lot of these off-the-shelf seed backup devices are overpriced and not as indestructible as they claim (especially in a bad fire). Here’s an alternative do-it-yourself method…

Stamp your seed words into stainless steel washers, number them so you know what order they go in, then screw them together using a hex bolt. It’s cheaper and virtually indestructible.

PARTS LIST:

M8 x 24 x 2.0mm washers: https://amzn.to/3xXLk9i

M8-1.25 x 35mm hex bolts: https://amzn.to/3zxvcfp

M8-1.25 hex nuts: https://amzn.to/3iAlUZb

Metal Stamps Kit: https://amzn.to/3BnG94I (if you already have a hammer you can just buy the stamps: https://a.co/d/ckENJgf)

Stamping Jig: https://www.cryptocloaks.com/product/blockmitjig (optional but helpful)