N Cook wrote:
I could not read 3 of the 5 characters on a heat damaged TOP66
[...]I wondered if a sort of "brass rubbing" would work.
I just happened to have some plummer's PTFE tape[...]
Laid a piece over it, rubbed with a finger nail,
and the missing characters came up like magic.

Cool.
That's a lot cheaper than what I thought of when I read the Subject
line.
http://www.google.com/search?q=dead-...nt-wavelengths
http://www.google.com/images?q=dead-...engths+laputan