T wrote:
Hi All,

I have a old off white keyboard that adore in
my shop.Â* The keys are starting to look a bit
nasty.

I have tried rubbing alcohol and vinegar and
nothing seems to clean it up.

Any words of wisdom.

-T

If the plastic is oxidized then the only way to get it white again is to
remove the oxide layer. It's usually not worth the hassle of sandpaper,
acetone, and sealer.
But if it's just dirty then take it completely apart and soak the keys
in a bowl of detergent and water for a few hours, then tooth brush and
rinse clean. Clean the touch surface with iso alcohol. Clean the front
and back plastic with detergent then dry all the parts off with your air
compressor. I do that with my fav keyboard every few years. It must be
near 20 years old now and still works and looks great.