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| It's the little things that catch you ! |
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| vtsteam:
Talk about blacking parts..... Andrew, just how did you know in advance to start this topic out in the Ooops section? As I remember it, fixer was sodium thiosulfate. You need to make one of those magnetic lab stirrers, Andrew, only suitable for twirling parts around. |
| Meldonmech:
Two interesting posts, have saved the shim info. I may have some fixing solution in the loft, must give it a whirl. Nice to know I am not the only one who has little accidents, it does seem to make posts more interesting. Cheers David |
| AdeV:
So, the moral of the story is - don't try to blacken your nuts, or you'll end up with your trousers down? |
| awemawson:
I can't remember where or how I heard about fixer acting as a blacking agent. Probably a bit of web trawling by me years ago. I don't know if the blacking is a deposit, or if it converts the surface layer of the steel. I did try a rub with one of those pan cleaning pads and it stood up to that ok - I wasn't going mad at it as I wanted the finish ON! With that electric hob, and a pyrex beaker that was too small for it I could only get the solution up to 75 deg C and seem to remember it should be almost but not quite boiling. However it works ok at 75 and dangling the part in it blackened within a minute. No doubt the longer it's in the thicker the black is. The other thing I have no idea about is it rustproofness (if that's a word) which is why after drying thoroughly under an electric hand dryer I rubbed Shell Ensis rust preserving oil on the parts. Considering what happened to the beaker I'm glad I hadn't got it up to nearly 100 deg C as that'd be a lot morec energy to dissipate down my jeans :lol: |
| vtsteam:
https://en.wikipedia.org/wiki/Sodium_thiosulfate |
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