bBob wrote:

Acetone instantly ruins the finish.
As will many of the 'tips' folks have suggested you 'try'.

Listen to bBob............
He has the right idea.

LEXAN CLEANING

The use of solvents which are not compatible with Lexan - polycarbonate
will result in the softening, crazing, and/or cracking of the plastic
part. This is especially true of polycarbonate lamps and mounting bases
which may be under stress in their normal applications. Polycarbonate
panels are resistant to some chemical and products non-resistant to
others. Resistance can be effected by the chemical concentration,
duration of exposure, degree of pressure and temperature at time of
contact.

SOLVENTS/CLEANERS COMPATIBLE WITH POLYCARBONATE:
Mild soap and water
Mineral Spirits
Mexane
VM and P Naphtha
Varsol No.2
#1 & #3 denatured alcohol
Freone TF and TE-35
Ethanol
10% Sol Bon Ami
Dirtex
2% Sol. Reg. Joy
Heptane
White Kerosene
Methyl, isopropyl and isobutyl alcohols
Lacryl PCL-2035 polycarbonate cleaner
Petroleum Ether/65 degrees C boiling point
Acetic Acid
Ammonium Chloride
Antimony Chloride
Borax in Water
Butane
Calcium Chloride
Calcium Hypochloride
Carbon Dioxide
Carbon Monoxide
Citric Acid - 10%
Copper Sulphate
Ethyl Alcohol - 95%
Ethylene Glycol
Formain - 10%
Hydrochloric Acid - 20%
Hydroflouric Acid - 5%
Mercury
Methane
Oxygen
Ozone
Sulphur
Water
Urea (You just might want to say **** on it......................)


SOLVENTS/CLEANERS NOT TO BE USED WITH POLYCARBONATE:
Acetone
Acrylonitrile
Ammonia
Amyl Acetate
Benzene
Bromine
Butyl Acetate
Caustic Soda
Chloroform
Dimethyl Formamide
Hydrochloric Acid-Conc.
Hydroflouric Acid-Conc.
Iodine
Methanol
Methyl Ethyl Ketone
Perchloroethylene
Styrene
Toluol
Sulphuric Acid-Conc.
Xylene
Cyclohexone Glycerine Sulphur Dioxide
Diesel Oil HeatingFuel Turpentine
Formic Acid Jet Fuel
Gasoline Perchloric Acid-Conc.

Another BOb