Willi’s Recovery Seed Plate can be purchased via bitcointalk.org. This is a very straightforward stainless steel plate measuring 100 x 100 x 4 millimeters. It’s quite hefty.
Willi claims the plate will protect your seed phrase from:
- mechanical damage
- other hazards
No problems to report here - very simple setup.
Heat Stress Test
Plenty of discoloration but no data loss.
Corrosion Stress Test
Some surface pitting, but fully legible data and template.
Crush Stress Test
No data loss, no surprises.