Codl Punchplate can be purchased at codl.co. Made from .071” thick, 304 Stainless Steel, the Codl Punchplate claims to withstand:
The first 4 letters of each word are encoded in a clockwise pattern starting from the top triangle, one word per column. This is highly compact but I would not recommend it for older folks. It requires precision to punch and pretty good eyesight to read.
I will note that the latest generation of this device has tiny “guide” divots where you see each dot in order to help you correctly align your straight punch.
Heat Stress Test
No issues reading the data despite some expected discoloration.
Corrosion Stress Test
The plate survived quite well.
Crush Stress Test
No data loss or remarkable changes compared to prior tests.