On Sun, 23 Dec 2007 13:28:34 +0000, Ian Thompson-Bell
wrote:

I am building a tube based mic pre into a 19inch rack case which is
painted black. I want to label the inputs, outputs and controls. What
options are open to a hobbyist?

Is this utility, or are you making up something to sell? If the
former, one of those label printers - the modern version of Dymo -
will do the job. If you're going for an expensive/retro look you
could stamp lettering onto copper plate and rivet it on, have it
engraved... Ask your local metalworker shop for ideas.