i tried both A2 and A4 washers but even using all my power the letters are not readeble enough..
i'm using a 0.5kg hammer
the only think is that i'm using wood for the base.. i know a steel base would be better but i cant believe it would solve all my problem.. or would it?

Thats why i was thinking to buy a press, a 1 tonn costs about 70€ but i was wondering if 1 tonn press would be enough to print the letters

I can't be the only one who has thought about this solution.. or am i? eheheh