I "lent" the letters M ans S from the facsimil of book of the times when the guitar was called vihuela de mano: Libro de música de vihuela de mano intitulado 'El maestro' by Luys Milán, MDXXXV (1535). I photographed the two letters (different texts in the book) run them through Photoshop adapting them slightly and smoothing them out, converted the jpg File in a vectorized file in order the engraver would accept it, emailed the vectorized file to them, and received today this: It is rather small. The letter "S" is 8 mm high and is engraved (well, actually it's "outgraved"

The uppermost attempt in the picture above was the first one (about two seconds of branding iron contact). In the next two minutes, without re-heating the brass bar I tried out how the results would vary with longer contact (maximum was about 5 seconds): The use of this small branding iron is easy, that is, the duration of contact is much less critical than I thought it would be. As there is a reasonable hunk of hot metal behind the tiny engraving one can make several tests before branding the piece of desire, with no danger that the temperature would drop significantly meanwhile.
It is such a lovely toy that I want to mark now everything: instruments, tool handles, stools, the desk, the computer screen, and if I had a pet it certainly would be in danger to get a branding mark on its flank!
