Little black marks

   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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KnightMare Send Private Message Find Member's Posts Visit Member's Homepage Really should get out more Joined: 08 Feb 05 Location: United Kingdom Online Status: Offline Posts: 1682	Post Options Post Reply Quote KnightMare Report Post Quote Reply Topic: Little black marks 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?


neilw Send Private Message Find Member's Posts Groupie Joined: 26 Jul 04 Online Status: Offline Posts: 88	Post Options Post Reply Quote neilw Report Post Quote Reply 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

nixy30633 Send Private Message Find Member's Posts Newbie Joined: 03 Apr 05 Location: England Online Status: Offline Posts: 37	Post Options Post Reply Quote nixy30633 Report Post Quote Reply 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.

iansmithofotley Send Private Message Find Member's Posts Visit Member's Homepage Far too distracted from work Joined: 16 Mar 04 Location: Otley, West Yorkshire Online Status: Offline Posts: 209	Post Options Post Reply Quote iansmithofotley Report Post Quote Reply 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.)