For the kind of work you're doing, you would benefit greatly by having a couple of ScotchBrite wheels. They come in many sizes. They are like polishing wheels, only you never use a rouge stick on them because they have the abrasive all through the wheel. You want one that looks like this. You can get them in 6, 8, and 10" diameters depending on what size your grinding/polishing motor uses. You want the 1/2" face width. The best setup is to get 2 of them, keep one with a square face and make one with a rounded face. You want the Grade 8S Fin as in the picture. The S denotes Silicon Carbide abrasive. Fin is Fine Grit. Your 2 hours of working on the trigger will become about 5 minutes. You can get a mirror polish on the other small surfaces in seconds. Get only the 3M brand. None of the others work as well. I've tried them all.
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