Search results for query: oxalic acid

I've used oxalic acid for cleaning up a vice that was rusted solid, when I took it out of the solution after a week the hardwood cheeks were fine. Some chemistry wonk can doubtless steer you straight. Oxalic acid is used as wood bleach, but I guess it all depends on solution strength and the...

Liberon wood bleacher is oxalic acid and works well on most light stains but it seems to me that you need to go onto A+B bleach, there are some stains it will not budge but it gets most of them and I would expect it to take out bearer marks. Your only problem might be sourcing it around...

I use Oxalic acid crystals diluted in water. Soak the item for 24 hrs . Will come out matt silver but a light rub will bring it back.

For small parts that can fit in a suitable tub, you can use oxalic acid / baking soda vinegar etc to remove rust. To remove previous finishes and rust together - you can use electrolysis https://www.youtube.com/watch?v=54ADeB6V1rQ

The most reliable method of getting ink stains out is to use oxalic acid. You can buy it ready mixed in a bottle ( liberon call it 'wood bleacher' I think they add a little meths to it ) or in crystal form and mix it with hot water then rub in gently with a soft nylon scourer. You may have to...

I would have thought an acid would be a suitable ager. I had in mind oxalic, but a Google found this http://forums.finewoodworking.com/fine- ... cid-report I have the Jeff Jowett book at home. I am not sure whether it covers it- will have a look this evening.

...also one corner where lots of paint is missing and lacquer is completely gone. And finally on the central drawer there are pen marks (it looks like somebody was testing pen on it). // ok I read that I can treat wood with: wax, oxalic acid and shellac. Still not sure what to do about the leather.

Hi and Merry Xmas to you as well. I doubt it is mould but more likely the reaction of iron of some description and the tannin in the oak. Oxalic acid can usually bleach it out. But if the oak hasn't been prepared yet then you'll most likely lose it anyway as you plane it etc.

The iron is fuber. The merest touch on the bench grinder and it shattered. The rear of the mouth also has a big split in the casting. it's pineappled! I'll pop a pic up later when I can find my USB lead.

Depending on the finish the stains are most likely to be from the water mixing with the tanins in the oak You can bleach it out with oxalic acid Edit for spelling

The finish is oiled (Osmo, I think). I have some oxalic acid gel that I used to restore some blackened oak windows - I'll test that on a corner of the stain...

...to know its fairly common. I only managed to get some small bits that were near enough all white out of quite a bit that I got. Will a stain or dye cover it over so it won't show up much? Or even some type of bleach, I actually tried oxalic acid bleach and it maybe helped a little but not...

Vann. I've used a citric acid solution to get rid of rust on a chisel without affecting the wooden handle (I stripped and refinished the handle anyway). I always use demin water just in case there are any tannins in the wood that might be affected by tap water. There are proprietary timber...

Interesting that no one has mentioned dilute Oxalic Acid. I was taught to use this to remove the blue black stains that some get on Oak etc. Of course Oxalic is poisonous so care must be used. David

Oxalic acid is the usual choice, drop me a pm if you need a bit.

...a fairly high build finish, so I'd guess there'd be a fair amount of refinishing to do. If it's a stain, you may be able to hide it with oxalic acid. Do you have an offcut you could try it on first? If you want some oxalic acid, I'd be happy to post you a bit . One last thought.Would it be...

I don't think you will be able to sand it out, I would be tempted to try and bleach it and see if that helps a really strong house hold bleach may just work but you will probabily have more luck with a proper wood bleach. Not sure but think oxalic acid might work for that kind of water mark.

After a recent mishap with oxalic acid in water, I would be very wary of leaving a water based substance in prolonged contact with wood. My concern would be warping. I had it happen with the oxalic acid, fortunately the very severe warping was cured by wetting the other surface, and then...

Thanks Mark - had a look at the FW article, sounds promising although his description of colour sounds quite brown still. He does refer to old pine look though. Need to find a local source for nitric acid in smaller volumes, just to test. Don't know about oxalic, will do a bit of research. For...

Oxalic acid is used to bleach out stains and dark marks in wood - it's easily available and you don't need much. It's also great for rust removal on tools if soaked in a dilute solution of it for a day or two (just make sure you neutralize with soda crystal bath after then a good rinse...