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Little black marks

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KnightMare View Drop Down
Really should get out more
Really should get out more


Joined: 08 Feb 05
Location: United Kingdom
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Post Options Post Options   Quote KnightMare Quote  Post ReplyReply Direct Link To This Post Posted: 02 Apr 05 at 9:18pm

yeah Buzz it has now been classed as a top class poison (or some thing like that) so i had to get my dad to go and collect it from the very nice chemists shop that ordered it in for me.

My next problem is that since i have a pot of this stuff what concentration should i mix? Any advice on this bit?

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neilw View Drop Down
Groupie
Groupie


Joined: 26 Jul 04
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Posts: 87
Post Options Post Options   Quote neilw Quote  Post ReplyReply Direct Link To This Post Posted: 02 Apr 05 at 11:35pm

 

You should be OK with 4:1, best to trial on a non-obvious place

There are also commercial products that contain oxalic acid, but are "safe" to use.

I have used Net-rol in the past and there's info on another product,TBS, over on the Classic and Vintage Racing Dinghy Association's forum. This link should take you to the relevant thread



Edited by neilw
Finn: K349 and GBR 670
ICs: K37 & K26
Solo: 1922
Flying 15: GBR 2147
www.pegasus18.com
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nixy30633 View Drop Down
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Joined: 03 Apr 05
Location: England
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Post Options Post Options   Quote nixy30633 Quote  Post ReplyReply Direct Link To This Post Posted: 03 Apr 05 at 12:42pm
hi, i need to clean up the black marks on my boat. i have the oxalic acid crystals, but when you put it on the boat do you just leave until it has dried out and then neutralise with meths or another spirit.
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iansmithofotley View Drop Down
Far too distracted from work
Far too distracted from work


Joined: 16 Mar 04
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Post Options Post Options   Quote iansmithofotley Quote  Post ReplyReply Direct Link To This Post Posted: 03 Apr 05 at 8:48pm

Hi nixy30633,

Personally, I would brush on the solution of crystals and water and let it dry out.  If after a few days, the black marks are still there, then I would repeat the procedure, as many times as necessary, until you are satisfied with the result. Once you are happy with the job, then you should use the neutralising spirit and leave it to dry out again.  I suppose that there will be some marks which will never come out no matter how many times you repeat the procedure, it just depends how bad they are. I am not an expert on this subject but I once refurbished a wooden Enterprise and the method worked for me.

Ian  (Yorkshire Dales S.C.)

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