ShiShi21m · 2w Do you find the etching is deep enough to withstand fire / corrosion? OceanSlim @OceanSlim 1786321816 It is per 3rd party testing comparisons via @Jameson Lopp Not to mention I've done both and let me tell you steel punches are a much bigger pain in the ass than just writing. But I am a big fan of washers and bolt.