"Theo" wrote in message
...
Hi,

I am in the process of cleaning and restoring an old
KW Vanguard transmitter which by the colour of
it, says it belonged once to a very heavy smoker.
I tried all the usual methods to remove the brown
tobacco film, it was so stubborn, it resisted everything
from washing up liquid to isopropyl alcohol (rubbing alcohol).
I then tried household ammonia - fantastic!
It removed all the brown stains in seconds.
One word of warning though - I would recommend doing
it outdoors, the ammonia stinks to high heaven!

Theo


Ammonia will deterioate plastic in short order. Suggest a much milder
cleaning agent and that you remove all ammonia residue. Even the fumes from
residue will make a mess of some plastics. Mild soap and water will remove
the tobacco stains.