David K | 14/06/2019 21:37:04 |
258 forum posts 259 photos | Hi , I made a Congreve clock about 4 years ago , the brass has a bright polish and coated with Renaissance wax. Its kept in a glass case. On the brass plates I keep getting a brown mark , almost like a light rust, just in a couple of small areas. I can polish it out but it always seems to come back . Is this caused by a bit of contamination in the brass plate itself? |
roy entwistle | 15/06/2019 08:34:19 |
1716 forum posts | Iv'e got similar on a chapter ring but I can see an obvious fingerprint in one of them so suspect all grease from handling was not removed Roy |
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