Search results for query: oxalic acid

I used oxalic acid quite successfully to remove ingrained skin oils on a musical instrument which had stained the amboyna veneers after the French polish finish had been worn away through years of playing. Finished with blonde shellac, came up a treat, and you'd never know it had previously...

Oxalic acid would probably give the best chance of bleaching it back.

I had excellent results with the oxalic acid. Looked at several recipes and in the end followed the average of a couple of similar ones. The mix was 10 parts hot water to 1 part oxalic acid by volume This equates to 2.5 teaspoons (I used the teaspoon measure that came with our breadmaker) to...

...might be present. This timber looks more like old weathered fencing though. I think with a wire brushing along the grain followed by oil and wax, it might just look that bit different. I'll save some Rhubarb for the Oxalic Acid.. If I remember my chemistry lessons correctly! Cheers. John :D

well the simplest and most effective remover of organic stains is oxalic acid pm me and I will send you some it is dissolved in hot water then applied with fine wirewool then refinish with whatever you want quick cheap and works great on blue stain on any timber! walla bien siv ou play! :lol:

...of the board are from my planner which currently has really blunt and chipped blades. Bob, I've had a read of your other thread about oxalic acid treatment. I'd be very careful dissolving oxalic acid in boiling water and certainly do it outside. I once burnt inside of my nose quite badly...

Oxalic acid works for ink stains, don't know about red wine. Maybe do some experimenting, excuse to crack open a bottle anyway

Oxalic acid will get rid of the steek marks. I don't think any finish as such will work on oak in this situation for very long. The best bet is probably a regular coat of vegetable oil; at least once a month and and probably more frequently. The words rod and back come to mind. Jim

Well the legs and frame are fitted back together. I have to finish with the card scraper then wash with oxalic acid, then I will carry on with the rest of the frame work, the draws and the top. Thanks for looking

Hi Brad The A/B bleach is stronger than the oxalic acid. The oxalic acid is better for removing stains watermarks etc wheras the A/B will change the colour more evenly allowing you to stain to a consitent colour. I think i would use the A/B mix myself. The process for the A/B bleach is let...

The job will probably also be stained. A dilute solution of oxalic acid will remove oak stains, but I wouldn't recommend using this on the hands. There is a tendency for the job to dry with a coating of tiny crystals, so wash the work when the stains have cleared. Unfortunately the water and...

...to get some mellowing on very pale timbers, but this is the best I have used for colour preservation. Another idea is to try bleaching with oxalic acid before applying the finish, you'll lose some grain definition, but the less colour you have to begin with, the less the oil can do to...

...good value and no complaints on that score. On the downside there were iron stains in a few places but these have responded well to oxalic acid treatment as I have posted elsewhere on this forum and TWH There was no evidence of the ends of the boards having been sealed and there are quite a...

Brad, Oxalic acid,as Jon says is OK for watermarks, black stains on oak etc but it doesn't affect the heartwood colour - A/B type bleaches (caustic soda/peroxide) do. Having a peroxide component means the shelf life is shortish for this stuff. Two short applications are much more effective than...

Looks like the end has been dipped in water ? Isn't it Oxalic Acid in these cases? Can't you work around it?

I think it's sticker stain from the sticks separating boards during the drying process. You could indeed try bleaching it with oxalic acid.

oxalic acid

Diluted. I've never had to use it on oak, but it's always mentioned. Here's some yank product with instructions: http://www.realmilkpaint.com/oxalic-acid-bleach.html

Oxalic acid is the usual thing to try.

Oxalic acid removes just the stain, hydrogen peroxide bleaches the whole wood. That's why I prefer oxalic acid, wood starts looking quite pale with peroxide or chloride bleach. Dissolve as much oxalic acid to warm water as you can. Dilute this with 2-3 parts of fresh water (keep some of the...