I'm attempting to clean up an oxidized stem on an estate pipe without tools. I've read through many opinions here and I'm trying to figure out where to go next. I find it interesting to do this manually and document the progress. The first thing I tried was placing the stem in water that had just come off the boil and then scrubbing it with a toothbrush and toothpaste. After that I placed EVOO on the stem since that's what I have around the house. The stem looks MUCH improved however, it's not finished yet. What would you suggest as a next step? Mineral Oil? Obsidian? Brebbia Stem Polish? I did have some Oxi-Clean around the house but can't find it now.. I could purchase the micro mesh pads but I'm afraid of buffing it down too much on my first try and ruining the stem.