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As I was cleaning my Royal Arrow with some laundry detergent and water, I noticed that after it dried, the paint on the typewriter turned from black to a brown.
Does anyone know a solution to this? I'm not sure if the color is black or brown now. Here's a comparison between the cleaned and not cleaned parts of the casing. The brown is what I cleaned.
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Why did you use laundry detergent? I have no idea what effect laundry detergent would have on paint - or the concentration you used - so it's hard to say. Does the detergent have bleach in it? Did you scrub the machine with the concoction? Maybe you've bleached the paint?
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I used it because it was readily available at the time. And I couldn't find any dish soap. I didn't use a lot, maybe only about an ounce. It doesn't have bleach and I lightly scubbed it. There was some dirt that did come off, and when ever I clean it with water again, dirt still comes off. So it may just be dirt. I don't know, I just might paint the machine a deep red for the heck of it if I can remove the case.