I didn't think to take any "before" pics, but I just dug around and grabbed this (cropped), from one of schrodinger555's posts - this is the Hales and clamp that I ended up acquiring from him:
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The Hales had been refinished and the neck was bright yellow brass. It was also impossible to unscrew from the frag body - he had tried, I tried, and then I had the idea to throw it in the freezer to see if the neck would budge. No dice... it was a permanent fixture. I was kinda' bummed, as I really wanted to swap out the neck that I had, since it had a nice patina:
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Plan B was ammonia fuming this new grenade (for about 4 hours). Unfortunately, the brass never turned brown like I was hoping it would, but it did dull it down nicely. When I pulled the grenade out of the bucket, it felt sticky - there was a thin film of light, mint green patina on the frag body. Not sure what that was about, nor was it part of the plan, but I figured that I'd just go with it. I rubbed most of it off with a rag, but left some in the grooves and crevices. Saved me the trouble of coming up with something later on, to make it look less new.
Not completely satisfied with the neck, I pulled out my bottle of JAX brown patina for copper and copper alloys:
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I mixed up a diluted 50/50 solution with water and dipped the neck in that (for about 15 seconds). Much better!
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The clamp had a thin orange haze of rust on the exposed steel areas, so I pulled it apart and soaked the parts in Evapo-Rust for a couple hours to clean 'em up. Also much better!
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That's the most that I've ever done to tweak the finish on any of the iterations of my Obi-Wan saber.