[HELP] Suggestions for writing on harmonica metal plates

[Jeff C.]

Well first off, if you are dealing with an acid pen then there is a very good likelihood that there may be instances of people getting hurt while trying to please me by using something that neither one of us are familiar with. Secondly,once acid is introduced onto the metal plates would it not be necessary to have some procedure to neutralize the acid when you get the desired effect of the signature etched into the plate? Also,this post is the first time I have ever been made aware of such a thing as an acid pen. While the generosity of the responders in sharing with me ideas that had not occurred to me previously is appreciated,my skepticism in actually being able to follow through with the demands this approach requires is a real issue. I am concerned that this would need more time and effort than time would allow,as a practical matter. There MUST be another way to do this. The intent on my part is very strong but you must realize that if what I am asking for SEEMS unwieldy or more difficult or too inconvenient, then there is a real chance of people just declining to follow through with the request.
Originally, I was hoping to having my eyes opened up to a writing method that would be more in line with what I already know,only with something that would be permanent on metal. Maybe that doesn't exist-----but by wanting to continue looking for another potential solution doesn't mean that what you are suggesting wouldn't work,its that there are considerations of expediency, simplicity and the demands put upon those who I am asking for their signatures. Does this sound like I am understanding you responses correctly? Again, I DO greatly appreciate your entertaining my inquiry.