I see people feel the need to strip-off the old paint from a modeling project. They use alcohol, AC 22 or, some other types of strippers and showing great care not to damage the plastic under the paint. I bought a bottle of Paint Stripper many years ago, still have it as it simply doesn't get used. I am in the middle of repainting a Rivarossi Passenger car at this time, making an NYC car out to be a Northern Pacific car. Re-painting Rivarossi passenger equipment is a recent project done by Cody Grivno of Model Railroader Magazine. Naturally, he felt stripping the old paint off the cars to be necessary. I did not do this and feel my cars look good enough without this extra process. Maybe it's just me. Maybe I don't need every detail on a locomotive, freight; or, passenger car to standout! What do you do? Since I model the Northern Pacific which has very little equipment available, it is certainly necessary for me to re-purpose some equipment. However, I don't see the need for me to strip any paint form projects I do and have done!