Traveller - stains on paintwork from wood treatment and dark marks on woodtreating wood dark

[eng622]

The PO was carless treating the wood leaving splashes on the paint. Notes about the car tell me Danish oil has been used in the past but may have been treated since. Trying with rubbing alcohol 70% may be helping but having to scrape off with my finger nails. Paint is 2 pack so no harm done. Any better ideas.
Second problem is the wood in places has dark stains. Intending to try oxalic acid, anyone had success with this. Do I need to rub down the offending areas to remove all the oil/varnish with a scraper/coarse grit paper first.

[Gary123]

Hi yes remove any previous finish on the wood by rubbing down , once free of any finish , give it a was with warm water and soda Chrystals as it is about to dry off and lighten from the soda hit it with Oxalic and use wire wool to scrub , you may need to do this a few times but will remove dark spots , then thorouly wash down with plenty of clean water, let dry , rub down with fine paper and apply danish oil at least 3 coats

[laslesta]

Hi yes remove any previous finish on the wood by rubbing down , once free of any finish , give it a was with warm water and soda Chrystals as it is about to dry off and lighten from the soda hit it with Oxalic and use wire wool to scrub , you may need to do this a few times but will remove dark spots , then thorouly wash down with plenty of clean water, let dry , rub down with fine paper and apply danish oil at least 3 coats

I have the same problem as the owner of the article. I tried your solution, it only cleared up about 70% of the black spots. Then I tried to do it again a second time and I found it all clean.

[Davidmoore]

What is a common trade name for oxalic acid.\? Where do I find it?

[Davidmoore]

What is a common trade name for oxalic acid.\? Where do I find it?

[The Scotmoose]

Hi there Davidmoore - If you "Google" oxalic acid you will find plenty of options and as always they range in price (even available in B&Q), but hopefully you will get your traveller looking the business.

[Guildbass]

I've recently done this...
Bought a bag of oxalic acid from ebay
Sanded down the old varnish around the discoloured joints.
Mixed the acid crystals with water to make a strong solution where no crystals remained in suspension.
Used kitchen sponges to soak up solution
used tape to hold wet sponges onto affected areas, one on top, one on the side, and left for a day or so.
Removed everything, and used woodstain and coloured polish to get an approximation of the original colour.
Refinished with a matt clearcoat...