I recently bought a tarnished crash ride for $20, and immediately, my parents started jupming on me about how to make it look nicer. I'm quite the beginner, no where near playing in public, and I was fine with how the cymbal sounded, which is why I wasn't worried. My dad likes to fix things like he knows everything, and, well... took some 220 sandpaper, a steel brush, ["Steel brushes are made to be used on brass," he assured me] and car polish to a small part on the top of the cymbal. It came out beautiful, but as I said, I'm quite the beginner - I don't exactly know anything about how to keep a cymbal clean either. My drum instructor has told me all I need to do is wipe the cymbal down with a dry cloth every day, or buy some actual cymbal polish at the very least. I took a closer look at the work my dad did and I could see the scratch marks left by the sandpaper. This should be clear by now, but, what I'm asking is, was the work my dad put into cleaning my cymbal safe? Should I let him do the rest of it with the same procedure?