ArtMetal

Hi Dabbler,
let me start by welcoming you to the Artmetal site. Good to have you with us. AND I must say........you pose an interesting question.
I believe the biggest problem with this is the difference in melting temps.
The sterling......melts at around 1645 degrees F.....and the graphite melts at around 6600 degrees F.

There must be a better way to get your "sentimental" valve.
two cents,

Bill