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Adam Simmonds




Location: Henley On Thames
Joined: 10 Jun 2006

Posts: 169

PostPosted: Mon 04 Dec, 2006 10:54 pm    Post subject: new spots on old steel         Reply with quote

hi there,

I just pulled out my sword and noticed some dark brown spots on the blade. It is an old blade of the 1600's and is covered in black to grey patina and is still shiny. these spots look like stains and could only be a couple days old, i was wondering what could stain steel like this. I sometimes cut fruit and yesterday it got a little rain on it - but i always wipe it clean.

I tried to rub rub the spots off with a cloth then with steel wool and oil but they dont seem to move easily, as i say, they appear to be like stains on the steel - can anything in fruit or earth or rain stain steel like this? Any ideas what could've caused this?

cheers
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Arne Focke
Industry Professional



Location: near Munich, Germany
Joined: 13 Mar 2006
Reading list: 34 books

Posts: 204

PostPosted: Tue 05 Dec, 2006 3:48 am    Post subject:         Reply with quote

Fruits, like the sweat of your hand or rain, earth (even some oils) etc., contain very aggressive acids which will stain most steels. If you really want to preserve an old blade keep it in a dry place and leave it alone as much as possible, unless an active rust appears on the blade.
So schön und inhaltsreich der Beruf eines Archäologen ist, so hart ist auch seine Arbeit, die keinen Achtstundentag kennt! (Wolfgang Kimmig in: Die Heuneburg an der oberen Donau, Stuttgart 1983)
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