How To Fix Damaged Hardwood Furniture

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How To Fix Damaged Hardwood Furniture

Рет қаралды 324,982

Күн бұрын

What do you do when black marks occur on your solid wood furniture? or when water or moisture penetrates the wood's finish? In this "How To" video, the craftsmen at Hardwood Artisans demonstrates an effective way to remove these blemishes so that you can continue to enjoy your solid wood furniture for years to come.
Hardwood Artisan's furniture is predominately finished with a Danish Oil and so these instructions are specifically catered toward Danish Oil Finished pieces only. Lacquer finished furniture requires a different approach. In the case of any veneer topped tables, extreme caution should be used. Hardwood Artisan's tables are all solid wood tops, and so these instructions are exclusive to our products. Viewers should use great care if following these instructions for other manufactured tables.
Note: The oxalic acid used in this video is not highly corrosive, as some of the comments on the comment thread imply. The oxalic acid we use is a mild, organic compound found in many plants.

Пікірлер: 113

@jamescrocker6104 7 жыл бұрын

So glad I found this fix. I had 3 black rings on my red oak dining table. I had tried other methods to remove the rings with no success. It took less than 10 minutes for the ugly rings to disappear. Thank you, thank you!

@hardwoodartisans 7 жыл бұрын

Glad to help.

@drworld2366 5 жыл бұрын

Does it fade the surrounding areas?

@SuperBenette 2 жыл бұрын

Really glad that I found this , i am going to give it a try, thanks a lot, be blessed.

@iBlameAnonymous 3 жыл бұрын

Perfect! This is exactly what I was looking for. Thanks for the video!

@chad2552 7 жыл бұрын

Your videos and knowledge are impressive but I noticed how many comments you reply to and that is truly impressive. Great work keep it up!

@hardwoodartisans 7 жыл бұрын

Thank you Chad!

@yanab.1574 6 жыл бұрын

Thanks so much for this video! I'm actually refinishing my dining table and wondered how to remove the black stains!!

@AGhamsters 4 жыл бұрын

This is great! My neighbors are having a yard sale and yesterday I bought a mid century modern side table that's gorgeous, but its match is in rough shape. It has these exact marks and some water damage. Now that I know how to fix it I might just pick up the second one.

@hardwoodartisans 3 жыл бұрын

Sounds great!

@lindaarmstrong5972 Жыл бұрын

Yours was the best one I have seen

@dougblazer1376 4 жыл бұрын

Thank you very much for this video. This is exactly the solution I was looking for.

@hardwoodartisans 3 жыл бұрын

Glad it helped

@kaylabates5841 Жыл бұрын

Perfect!! Exactly what I needed to know!

@shirleyhuestis535 5 ай бұрын

Thank you for making this video. I bought some oxalic acid and I am a little nervous about using it because I have been warned that it’s so toxic. But you didn’t wear gloves or a respirator or a mask or anything. Why???

@mickdavid8667 5 жыл бұрын

many thanks

@socon3981 7 жыл бұрын

Thanks! Just want I needed to know.

@Keithlovejenny 5 жыл бұрын

I moved house & bags of things piled up until 3 months later saw a bag of rotten apples, the juice made a big black stain on my wood floor, will this work or any other suggestions, thanks in advance Mark, God bless

@scoth5135 3 жыл бұрын

So that’s great, what do you recommend for stains on walnut veneer? I’ve got dark spots where it looks like someone put a hot pan on it, it’s not major but darkened the area

@jenniferbecnel439 6 ай бұрын

Does this work for stains caused by bleach?

@MrMoboots 3 жыл бұрын

Hi there, great video I tried your process it did help but it was not 100% effective. What else can I try to remove the black staining?

@KAROLINAPOCHWAT 3 жыл бұрын

Sometimes you have to repeat the process a few times.

@hardwoodartisans 2 жыл бұрын

On a table with a lot of damage, like the one in our video, repeating the process is necessary.

@basslinechic 2 жыл бұрын

Would this work on a veneer surface (that’s what I think it is anyway) that is blotchy, deep red toned, and a handful of shades darker than it was originally? I had put a lacquer over it, then it dried patchy, so the next day I took citristrip (worst mistake) over it all and it left me in tears because it now looks so horrible. These vintage pieces are difficult.

@miriamgalvin3174 6 жыл бұрын

Love the video very easy to follow, having sanded back my dark oak sideboard I have found black marks that have penetrated into the grain and surrounding wood. I didn’t think it was that bad until I used danish oil to seal it which made the marks 10times worse. I have followed this tutorial for the last 2 day’s and after 2 applications over 24 hours it isn’t working for me... can I email photos for further advise please, I’m not sure what to do x x

@hardwoodartisans 6 жыл бұрын

Hi Miriam, Send a few pictures of your sideboard to Mark Gatterdam at mark@hardwoodartisans.com Once he has received the pictures, he should be in touch to advise you on how to fix this issue. Thanks, Hardwood Artisans

@emiyagi1 6 жыл бұрын

Hi-Thank you so much for posting this video. You've mentioned that lacquered finished furniture requires a different method. I was wondering what method do you recommend to get stains (stained legs from just using/denim dye stains) out of matte lacquered solid oak furniture. Will I be able to still use oxalic acid? I would love to get some of your expertise. Thank you so much.

@hardwoodartisans 6 жыл бұрын

Dye stain is just that. It dyes the wood. Oxalic acid is a neutralizer, and I do not think it would be of any use. I am extremely cautious to give any advice here, but it sounds like Acetone may be the only way to remove the stain. However, Acetone will melt lacquer......this may result into a refinish project. Mark Gatterdam Hardwood Artisans Designer

@wendyburns9981 2 жыл бұрын

i covered a wooden treated memorial bench with tarpaulin (to protect it in winter!) and a lot of the bench now had these black marks and lines which i have tried to get out, would this method help? thank you

@achardjc 3 жыл бұрын

Would it not help to lightly scrub the area with a nylon brush or brillo pad while it is wet?

@donovanryan7247 9 ай бұрын

Would this work to remove a battery acid stain from a car battery?

@bells2577 2 жыл бұрын

Does this work for oak veneer flooring? I have water damage that's in-between the sections. I know it's 2mm veneer.

@highwealdwoodsman 2 жыл бұрын

Hi will this method remove blue mould staining found in untreated sap woods?

@user-ft3gs8vr8l 2 жыл бұрын

Will this work also for a black stain in a porch?

@ekaterinas.1330 2 жыл бұрын

I've tried oxalic acid and it didn't do anything to the stains on my oak sink countertop! Is there anything else I can do? Thank you.

@zulustu8214 7 ай бұрын

I wouldn’t sand it unless the stain is still there…. It cause a texture change to the wood that requires the whole table to be prepared ie sanded in this case… makes more work for no real need

@midnightchannel7759 3 ай бұрын

"8 to 1", meaning, 8 parts water to one part acid?

@flynn1751 2 жыл бұрын

I have a dark stain on a hardwood floor from an air conditioner leaking onto it for a few days. Do you think this will work on that?

@hardwoodartisans 2 жыл бұрын

You might want to refer to the manufacturer recommendations regarding wood flooring. Our videos are only for our wood furniture which is built from solid hardwoods and finished with a natural danish oil.

@fingerpicker0207 4 жыл бұрын

Omg.it actually works! :D :)

@hardwoodartisans 3 жыл бұрын

Great! Glad to hear it. After 45 years of building furniture we are still amazed by this video. It really shows the true nature of wood and how forgiving it is.

@debolsen3294 3 жыл бұрын

could you have applied stain after the lightening of the table and then put a clear coat on top?

@hardwoodartisans 2 жыл бұрын

Once you apply a clear coat you lose the ability to apply heat or any other type of cleaning or repair product as it will dull the finish. We apply these techniques to solid hardwoods only and only those that have been finished with a natural Danish oil hand rubbed finish.

@basketballmaven1454 2 жыл бұрын

are those dark stains toxic? Kinda like mold?

@HimmelaufErden 2 жыл бұрын

can you use this on hardwood floors?

@khadijameredith7586 8 жыл бұрын

Hi :) Really nice video; thank you! Quick question... does this acid need to be rinsed or neutralized before finishing? Mine would be for heavy wear patterns and staining by doors, etc., in a very old wooden floor, and will eventually be sealed with a water-based floor finish. I guess my point is that since it's a floor taking heavy abuse, I'm afraid that all of my hard work could be undone by the acid lurking underneath, possibly preventing an optimal bond with the finish, or even the acid continuing to break down the integrity of the wood...? Thank you for your help! :)

@hardwoodartisans 8 жыл бұрын

+Khadija Meredith A few additional general points regarding this process. The Oxalic Acid process will work on an unfinished desk from the 60's. It works on penetrating oil finishes, like Danish Oil, Teak Oil, Linseed Oil, Wax Based Finishes, etc. Regarding flooring repairs, the finish (polyurethane, varnish, etc) needs to be removed first. Then the acid may be applied. I have never found a need to reverse the acid or neutralize in any way. The key thing to watch out for is that the wood has fully dried, that there is no moisture from the acid process left in the wood. I will run a hair dryer over the wood, extracting any remaining moisture (it will bead up as the wood is lightly heated). I then let the wood stand for a day or two.

@ushamehta3099 2 жыл бұрын

@@hardwoodartisans p

@williamrice1955 Жыл бұрын

He should have said you must rinse the acid off thoroughly before sanding. You don't want to breathe the dust.

@studiohost 7 ай бұрын

Neutralize with soda

@prashantbhople7112 5 жыл бұрын

Dear Hardwoodartisans, Could you please suggest me how to remove the black stains from a wooden laminate flooring. The wooden flooring is quite old and with time it has developed molds in the gaps. The mold is not smelly or anything else. It is just there where the wooden flooring is coming out. I have tried bleach but the stain does not go. It will be a great help.

@hardwoodartisans 5 жыл бұрын

Hello, Thanks for reaching out. Unfortunately, this type of work doesn't fall under our area of expertise. We strongly recommend consulting with your local flooring store. They should be able to help you more than we could. If you have any questions related to furniture, we may be of help. Kind regards, Hardwood Artisans

@JohnSmith-cy4nn 7 жыл бұрын

Hi Pat and thanks for the video. I have a problem that someone vomitted (!) on the wood floor of a cottage I rent. Although they cleared it up it's left a stain. Would this work on that? Will I be left with a big white splodge? The whole floor has a light colour stain. Would I need to remove that from the whole floor in order to keep an even finish?

@hardwoodartisans 7 жыл бұрын

Hello, We are not flooring finish experts. I think it really depends on if the floor is oil finish, polyurethane, varnish, prefinished from the factory, etc. I would contact a flooring company for an accurate advice. Best, Mark

@tanelise4673 2 жыл бұрын

I sanded my table and the dark area is still slightly visible. can I use the acid since I've already sanded? Also my table is light in color like the one in your video. I love the natural look of it but what should I put on it to protect it? I don't want a stain on it or a glossy shine

@hardwoodartisans 2 жыл бұрын

We recommend Kerf's lavender wood lotion to maintain your natural wood finish. It provides a dull finish, not glossy or shiny.

@tanelise4673 2 жыл бұрын

@@hardwoodartisans Thank you, I'll get some!

@tanelise4673 2 жыл бұрын

@@hardwoodartisans Thank you, I'll get some!

@tad2ik 3 жыл бұрын

Can I use this method on lacquered oak after stripping off all lacquer? After sanding the table top thoroughly I still have horrible black marks.

@hardwoodartisans 3 жыл бұрын

We recommend this process on unfinished or finished solid wood furniture with a Danish oil only. Please feel free to contact us at info@hardwoodartisans.com if you'd like one of our craftsmen to walk you through the process.

@yahchile7681 8 жыл бұрын

I have an unfinished pine desk from the 60's. Could I use this approach to remove the water spots?

@hardwoodartisans 8 жыл бұрын

+Devora Daniel A few additional general points regarding this process. The Oxalic Acid process will work on an unfinished desk from the 60's. It works on penetrating oil finishes, like Danish Oil, Teak Oil, Linseed Oil, Wax Based Finishes, etc. Regarding flooring repairs, the finish (polyurethane, varnish, etc) needs to be removed first. Then the acid may be applied. I have never found a need to reverse the acid or neutralize in any way. The key thing to watch out for is that the wood has fully dried, that there is no moisture from the acid process left in the wood. I will run a hair dryer over the wood, extracting any remaining moisture (it will bead up as the wood is lightly heated). I then let the wood stand for a day or two.

@yahchile7681 8 жыл бұрын

Thank you so much, its very beautiful, Im glad I can do this. thanks for taking interest in answering.

@choomc65 3 жыл бұрын

Can I use oxalic acid to remove rust stains on wooden floor? Or can I use WD40 also?

@hardwoodartisans 2 жыл бұрын

We don't advise on wood floors as they usually have a stain or varnish. Our furniture is mainly finished in a natural Danish oil.

@beatadudzinski7274 7 жыл бұрын

I used oxalic acid on a pine floor, will I be able to use a water based varnish on top?

@hardwoodartisans 7 жыл бұрын

Yes, that should be fine.

@carolinaviterironald1974 7 жыл бұрын

I am refinishing an old love seat and decided to finish it with Danish Oil but it turned horribly yellowish, plus it was made out of different kinds of wood that show more when finished. Can I use this method to remove the Danish Oil and then bleach my furniture to match the colours? I am sick of sanding this thing...

@hardwoodartisans 7 жыл бұрын

Hi Carolina, The question posed here is more of a refinishing problem and less of a wood bleaching problem. Basically, the answer is "no, you cannot bleach different woods and expect the colors to blend. Because you have different woods in the piece (which is not unusual in this type of application) you will need to apply a fairly dark stain to cover and blend the different woods. Heavy stains generally require a lacquer finish as a top coat to hold the color in, so Danish oil will not work here. I always reserve giving advice on furniture I have not seen nor touched. My advice is just that, my opinion of a problem I have not seen. I suggest taking the piece to a refinishing shop and having them apply color and lacquer. You may have been going for a natural look for the legs, but in this application that is probably not possible to achieve. Good luck and be patient. Mark Gatterdam Hardwood Artisans Designer

@carolinaviterironald1974 7 жыл бұрын

hardwoodartisans Thank you so much for your reply!!! I'll do exactly that. I'm a beginner and this was a bit too advanced for me at this moment but that's how we learn.

@PatC. 7 жыл бұрын

Could you tell me..... if I use one half cup of water, would one teaspoon of oxalic acid be enough?

@hardwoodartisans 7 жыл бұрын

Hi Pat, Yes it will be. -Mark

@cecilialitvak 7 жыл бұрын

Hi, I have a 17th century lowboy with this issue but don't know the finish on it. Do you have a recommendation for removing the gray stain? Thanks

@hardwoodartisans 7 жыл бұрын

I am hesitant to make any suggestions without seeing the piece. If you are in the Northern VA area, I recommend contacting a restoration group, Hudson Woodworking,14620 Flint Lee Road Unit C Chantilly, VA 20151 703-817-7741 703-629-WOOD Hudsonwoodworking.com

@cecilialitvak 7 жыл бұрын

I live near Wilmington NC 28411. Do you know of anyone in this area? Thank you very much.

@hardwoodartisans 7 жыл бұрын

I am not familiar with any company in that area. Sorry!

@sharksport01 5 жыл бұрын

Sell it and go contemporary.

@theccbaxter 7 жыл бұрын

Could this work on stained wooden worktops? And would it (the worktop) be safe (not poisonous) after?

@hardwoodartisans 7 жыл бұрын

Yes, the acid will neutralize any wooden top. Once the chemical dries and is wiped away, and then some subsequent finish applied, the acid becomes inert, so I believe it is safe.

@theccbaxter 7 жыл бұрын

hardwoodartisans thanks.

@monkeyvideo1029 8 жыл бұрын

Mark, Thanks for the awesome tip! I just discovered several unfinished mahogany veneered doors that have been sitting in an addition on my house that incurred a leak a few months prior. Unfortunately the doors sat on a wet floor and the bottom rails are stained. You caution about using this process on veneers. Could you explain your concern and how you might proceed (I assume all risk and at this point the doors are already damaged). Any help would be greatly appreciated. (Sorry if this is a repeat but my post from yesterday was here this morning and then it disappeard?) Thanks, Carl

@hardwoodartisans 8 жыл бұрын

Hi Carl, the concern I have about this process as it applies to veneers is that veneer does not like water saturation. There is a risk of de-lamination. As these doors have already sat in water and appear undamaged (less the stains), this process is probably safe to try. Go ahead. Please take some before and after pictures for us!

@larisazhou3324 3 жыл бұрын

Hi, do u sanded the wood before apply the acid?

@hardwoodartisans 2 жыл бұрын

No.

@dimsdims8375 2 жыл бұрын

Are those stains mold/

@hardwoodartisans 2 жыл бұрын

They are newsprint stains.

@samw6048 7 жыл бұрын

Can you spell the name of that acid? We can't get it if we do not know what it is and I could not understand you.

@hardwoodartisans 7 жыл бұрын

Hi Sam, Oxalic acid was used in this video.

@sheilaowen7819 7 жыл бұрын

Hi I have a solid Elm sideboard which was made in the 1980's and has a spirit based varnish, There is a lot of water damage on the top which has turned Black, How do I get the Black mark out? Can anyone help, I live in the Uk. Thanks Shelly I can email a pic

@hardwoodartisans 7 жыл бұрын

Hi Sheila, We may be able to help. Please send a picture of the piece and the water damage to mark@hardwoodartisans.com He should be able to tell you what your options are after seeing the actual damage. Best Regards, Hardwood Artisans

@sheilaowen7819 7 жыл бұрын

Hi I cannot seem to send a picture of the piece of furniture. Regards Sheila

@billwalz2888 6 жыл бұрын

Does the surface on which the Oxalic Acid was used need to be neutralized when done? (Baking Soda)?

@hardwoodartisans 6 жыл бұрын

No, I have never found the need to neutralize the chemical. Oxalic Acid is itself a neutralizer actually, and once the carrier (water) evaporates, the chemical reaction stops. Thanks for watching. -Mark Gatterdam

@Adindastrawberry 7 жыл бұрын

Is oxalic acid the same as Soda Crystals?

@hardwoodartisans 7 жыл бұрын

No. That said, I am not a chemist, but I do understand that the cause and effect are the same. What actually happens to a stain in wood when oxalic acid reduces, the stain is not removed. Rather, the oxalic acid changes the chemical makeup of the ferrous to ferric acid. In other words, it changes the iron in the stain from one isotope to another, which is colorless. -Mark

@mrs_d3n1mx28 6 жыл бұрын

hardwoodartisans wow thank you so much for that explanation! it's so impressive that you reply to all these people's comments! you are my KZfaq hero of the day!!!

@loganballard 6 жыл бұрын

Will this work on untreated/unfinished wood?

@hardwoodartisans 6 жыл бұрын

Hi Logan, Yes, it will remove stains from decks, wood boat parts, etc.It will probably be even more effective removing stain having no finish. In the hardware store, you can buy “wood bleach” type products to do just this. Mark G.

@jeannettepalermo6265 5 жыл бұрын

hardwoodartisans o

@danisebianchi3271 8 жыл бұрын

Mark, Can I use this oxalic acid on a teak table

@hardwoodartisans 8 жыл бұрын

While we are not experts on teak wood, oxalic acid was used for years on teak wood boats. The metal would bleed into the wood. If this table has a lacquer finish - no. If it is finished with real oil, then yes, it should be fine. Best, Mark

@shannoncupit1304 4 жыл бұрын

Can I use this method on raw wood?

@hardwoodartisans 3 жыл бұрын

On unfinished wood or wood finished with Danish oil. This process is not recommended on lacquered or painted furniture.

@duffking3476 8 жыл бұрын

what if u don't have that acid what else can u use

@hardwoodartisans 8 жыл бұрын

+Duff King To remove black marks from a table, there is no other chemical neutralizer I know of that will perform like oxalic acid. I am sure there are other things out there that will reverse the damage, but I have worked with this product for years, and am always impressed by the results. You can buy this product on line. It costs about $10 for a pound of product. -Mark

@missdonetime2754 5 жыл бұрын

order some 2-day

@radturkin4590 2 жыл бұрын

this has given me hope. but im going to wear gloves and eye protection.

@TheCleverMommy 5 жыл бұрын

Ur f-ing awesome 😲

@TheCleverMommy 5 жыл бұрын

@@missdonetime2754 was thanking him for being awesome...I actually did my first restoration on my first vintage mid century table with his tips 😀 I think a an expert now 😆😂 but I'm not 😉

@kimberlythompson1835 2 жыл бұрын

Hopefully everyone understands that the acid needs to be applied on the entire surface, so it all matches and stains the same.

@hardwoodartisans 2 жыл бұрын

In this instance we do not recommend applying this solution to the entire top piece. As we demonstrated in the video, the mixture was applied only to the stained area of the top.