Little black marks

   Thats the stuff oxalic acid, and I think he then used white spirit or maybe turps.

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bigwavedave Send Private Message Find Member's Posts Really should get out more Joined: 04 Jun 04 Location: United Kingdom Online Status: Offline Posts: 944	Post Options Post Reply Quote bigwavedave Report Post Quote Reply Topic: Little black marks Posted: 23 Feb 05 at 9:38pm
	Thats the stuff oxalic acid, and I think he then used white spirit or maybe turps.


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: 23 Feb 05 at 8:26pm
	Hi Stuart, You could try masking off, sanding back, drying out, solution of oxalic acid crystals (from chemist shop) and water, dry out and leave, clean up with meths or other spirit to neutralise, dry out, fine sand, epoxy, fine sand, multi varnish job. If you can get to the under side of the job, it is worth checking that the damp is not working its way to the top side from the under side, if it is, sand back dryout, epoxy and paint/varnish job. It's a good idea to find out what caused the problem in the first place, if the problem is due to flexing, some beefing up may be required. Ian (Yorkshire Dales S.C.) Edited by iansmithofotley

bigwavedave Send Private Message Find Member's Posts Really should get out more Joined: 04 Jun 04 Location: United Kingdom Online Status: Offline Posts: 944	Post Options Post Reply Quote bigwavedave Report Post Quote Reply Posted: 23 Feb 05 at 5:51pm
	Get a plastic boat, paint it not varnish. It depends on what the marks are. If they are damp spots try the following. I remember my Dad doing it to a Firefly a long time ago. Get the varnish off and make sure the timber is very dry. If they don't go with a little light sanding then you may be able to bleach them out. But make sure you try on a hidden area first cause you might get a bad reaction. Can't remember what he used at the time but I'm sure a chandlers would be able to put you in the right direction.


stuarthop Send Private Message Find Member's Posts Really should get out more Joined: 22 Dec 04 Location: Nottingham Online Status: Offline Posts: 1040	Post Options Post Reply Quote stuarthop Report Post Quote Reply Posted: 23 Feb 05 at 2:25pm
	There are a few small black marks under the varnish of my scorp and i would like toget rid off them, a freind told me that you can just sand them away but another told me theycan come back if you do this. does any one know how I can sort this problem?