Members Tannin Posted July 29, 2014 Members Report Posted July 29, 2014 Beautiful carving/sculpture Spinner. I looked into using oxalic acid last year to remove many deep tannin stains from a large oak dough bowl that I carved (the staining probably occurred because I'd soaked the blank a long time - perhaps too long - to keep it as green and then continued to soak it between working sessions). Having seen you results, I might now give it a go - so thanks for sharing that . Quote Simple Leathercrafting
electrathon Posted July 29, 2014 Report Posted July 29, 2014 No one has mentioned this so I will throw it on. Oxalic acid is pretty harsh. Read the MSDS on it. If you are going to use the stuff, wear gloves and keep it off of your skin. Quote
Members Tannin Posted July 30, 2014 Members Report Posted July 30, 2014 (edited) Good point. I generally avoid using harsh chemicals, including organic solvents (such as turpentine), as far as practical. Oxylic acid is the poisonous acid found in rhubarb leaves: stronger than white vinegar (which I tried) but not, I think, as strong as battery acid, etc. Looks like gloves & glasses would be prudent. http://en.wikipedia.org/wiki/Oxalic_acid Edited July 30, 2014 by Tannin Quote Simple Leathercrafting
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