if you want to play with something a little less volitile than oven cleaner, try 409..... it'll dry out ur skin if u get it on ur hands and dont wash it off, but its safe, cheap, and u can use the left overs to clean up ur modeling space. I ussually just fill a think tupperware containter with it, just enough to cover the tree of parts when i put them in. Then let it sit for a few hours to overnite. Some suppliers chrome takes longer thanothers to come off. but if its being stuborn, take an old toothbrush to it. make sure u rinse the parts off afterwards. and like i said, take care to not dry out ur skin.