Noydini Report post Posted November 21, 2021 Hi there, I’m trying to recondition a bag that has some black stains on the leather that have been caused by some sort of reaction to the corrosion of the press studs. Is it possible to remove this? Saddle soap isn’t shifting it… Quote Share this post Link to post Share on other sites
fredk Report post Posted November 21, 2021 Iron poisoning. It is indeed a reaction of iron parts on the leather I think only oxalic acid will lessen it, but it might not remove it completely. You can usually get oxalic acid in powder form in hardware stores and some chemist will sell it to you. Sometimes its sold as 'Barkeepers Friend' (in B&Q afaik) When replacing any iron or steel parts, replace with pure brass ones Quote Share this post Link to post Share on other sites
TonyV Report post Posted November 21, 2021 Oxalic acid is also sold as 'wood bleach'. Used to lighten similar stains on wood. Quote Share this post Link to post Share on other sites
Handstitched Report post Posted November 22, 2021 In some cases, if oxalic acid doesn't work , its best to dye the whole bag the same colour as the stains, if thats an option . HS Quote Share this post Link to post Share on other sites