-snip- Does the sound of metal hitting metal when engraving text on a plate cause unpleasant sensations and discomfort? Then use instead of a hammer, for example, a wooden mallet or something similar ("rubber" mallet). Also, in a small and enclosed room the unpleasant effect will be felt more.
"Soft" metals, such as aluminum, if used as seed phrase plates, will ring less when struck. This is just a note.
The preferences of each person who practices it may differ regarding the sound produced during the washer stamping process. fillippone was not bothered by the sound during the process, while I felt a little annoying noise during the stamping process, so I used earplugs to reduce the noise.
Wooden or rubber mallets are not suitable for metal stamping work. I even used a Stone hammer to get more pressure when stamping.
Please try to make backup seed phrases with washer material. At the same time, try using a wooden mallet to find out whether it suits the washer stamping process.