Rust Removal Methods Explained
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- เผยแพร่เมื่อ 4 พ.ค. 2024
- Common liquid rust removal methods explained with a little bit of science. Including Electrolysis, Vinegar, Citric Acid (Lemon Juice), Oxalic Acid (Molasses), Evapo-Rust, Phosphoric Acid (Coca Cola), and Hydrochloric Acid.
A brief explanation of the chemical reaction involved with each method. The effect each method has on rust and good steel. The difference between rust dissolvers and rust convertors.
Skip to : Vinegar 1:47; Citric Acid 3:49; Oxalic Acid 5:41; Evapo-Rust 7:20; Hydrochloric Acid 8:58; Rust Convertor 11:25; Phosphoric Acid 13:24; Electrolysis 14:56.
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This is definitely one of the best TH-cam videos I've ever seen. It is not just edited at a good pace, one you can follow and understand, no annoying background music, just enough technical information to show up that the speaker knows what he says, and of course good realistic and credible demonstrations. I think this is a model to follow. Thanks a lot, Geoffrey Crocker, you earned a follower in Peru.
Yes , I agree entirely. His video was as good as an episode of NOVA on rust removal of all things . SUPERB .
Yes seriously 🙌🏻
ржавчина это Fe(OH)3 или Fe(OH)2, а не Fe2O3 а так всё по делу
Probably the best blend of chemistry and practical view of the rust removal issue on TH-cam. Ill go for 12v 5A on a 25Lt plastic container, with good ventilation...
"This involves science." Donald Trump please stop watching the video now! lol :)
@Schwalbe262 yet still true no matter how old it gets :-)
love how you show the elemental reactions. I'll take your word it is done accurately.
Very informative and you have a nice presentation. I can use this in my science class. Thank you for this video clip.
That was the most coherent demonstration and explanation of this topic that I've seen - and pitched at just the right level for the hobbyist. This and the one on plating that I watched just before. You've given me the confidence to start trying this stuff. Well done - you are a born teacher.
I love the way you visually represent the chemical aspect of this information.
Your very methodical and clearly communicated approach makes me suspect that you are very talented teacher. You have certainly taught me a few things. Many thanks.
Thorough and intelligently demonstrated. The chemical reactions and the use of a pH scale for reference are big pluses. Great video!
YES
Very much agree, from a Chemistry Graduate
excellent video, edition graphics and sound, a piece of work and time taken. Really nice job.
I've been looking for this video for the last year. I've been getting my 1987 Suzuki samurai running and slowly restoring in the garage. Its got some surface rust on most parts and I have been looking for the right avenue to remove the rust. THANK YOU SO MUCH FOR MAKING THIS VIDEO! Greetings from Los Angeles
Most informative video on TH-cam I have watch in a long time. Precise & clearly presented. Excellent graphics. Thank you, thank you, thank you!
Love it! You brought it to the next level man! So interesting to watch, all the chemistry and stuff. Very useful video, well done!!!
Geoffrey, A big thank for posting this video it's excellent! I've got a car restoration project I'm doing and the electrolysis method you show works perfect! Thank you very much for taking the time to educate others.
Finally a comprehensive video from someone know knows what he's talking about. Great help, thanks.
Finally, someone who adequately explains the chemistry behind the various methods. Thank you!
Great vid... beautiful work with great explanations.
Keep them coming Geoffrey
This is a one hundred percent better explanation than most. This is a true explanation of how you can go about things. I certainly appreciate it.
Not only does this channel fulfill my land rover restoration needs, it taught me how to restore and take care of my tools
Thanks mate
I admire the choice of music from ALL of your videos Mr. Croker
I've watched and read a lot of information of all the methods you presented here. I'd say your presentation is the most complete and comprehensive for the home gamer perspective. Big thumbs up for taking the time and sharing your findings with us.
Thanks Shain
Great info. So glad you mentioned the fact, that it doesn't have to be washing soda and that salt will work just as well, seeing as, you're only increasing the conductivity in the water.
Completely brilliant video. Straight to the point and super informative without digressing in details.
This is a complete overview of rust removal methods, and very well done at that. Bravo!
With regard to electrolysis, the use of a carbon anode instead of a steel anode will eliminate rust scum from floating on top of the solution in the electrolysis container. See the Shopdog Sam videos on this subject on his TH-cam channel. Once he started using carbon anodes, he never had to change his solution because of floating scum. These carbon rods are available from welding supply houses.
For quicker action with vinegar, use a 30% or greater concentration, but wear gloves and work outdoors - the fumes are very strong.
As always, a cracking good video. Many thanks for presenting an evidence based review of the various options we builders have, and delivering it all with just a gleeful touch of humour.
Awesome video, pertinent, clearly enounciated, to the point, with nice behind the scene science explanations and great points on safety and real world affects to metal. Subbed.
I have been searching for days to understand these technical details and I found them all in your video. Thats very generous and good of you, thanks from OZ.
Rust in peace at the end, nice touch!!!
Great video, truly quality content
Excellent description of all the alternatives. Thanks for this vid!
Geoffrey that was the best and most understandable test and description of how each of these methods work, all I need now is a massive plastic tank and quite a few phone chargers so I can immerse my Mini shell into!! Thank you for taking the time to make this excellent video.....
Thanks so very much for this. Im resoring a 100+ year old bike and this video has been exactly what I have been looking for. Much appreciated.
Excellent overview Geoffrey, one of the best on this subject, thanks for this !
I appreciate your explanation of the usefulness of each process. I've used them all except Evapo-Rust but I didn't know the ideal scenarios for their uses. Practicality means a lot and I learned that even Phosphoric Acid has its place -- for a pre-plating wash. This is brilliant. I am undertaking a motorcycle restoration and the fuel tank is slightly rusty, inside. I will probably start with Citric Acid based on this video and up my rust removal game. Thank you.
Top video! I wish you were my science teacher in school - I remember these diagrams but never did any electrolysis!
I know it's almost 4 years later but... awesome! Great video Geoffrey. Thanks for putting this together.
Geoffrey, absolutely brilliant video, both content and presentation! You've covered all bases and given me an easy way to set up a simple electrolysis system. I use that particular tannic acid product all the time for outdoor touch-ups as the coating acts as a primer (or final coat if I'm lazy). Love the dry Kiwi humour!
excellent video. best I've seen on the subject. I'll be going the citric acid route as I don't want anything aggressive to clean up my 40 year old Snap-On old feeler gauges
This is exactly what I've been looking for! So helpful, thank you!!!
Super useful video, such a pleasure to have all this info in one place & great that you had the fortitude to see it through. I have used most of the methods & agree with you that the wire brush is the best, so immediate & so none disrupting of the work process. If I am over painting I tend to use wire brush then rust convertor, accelerated with hair dryer & then prime, hair dry, top coat. Somehow the wait times for the other methods cause too much of a loss of momentum. Thank you for sharing!
It was so clearly explained that I thought I'd give electrolysis a go. First rusty bolt is fizzing away as I type. Really enjoyed watching your vids during lockdown in the UK. Thanks for helping me pass the time and learn something new.
Perfect survey! I'm going to set up my own electrolysis station. Thanks for the info Geoffrey!
wow you made a very good research on all the item you propose here... good work!!!!
I am glad you entered in your last little part with the grinder. Always the best option.
You did it! This is *the* best video I've seen on rust removal. Thank you!
Great video! I really appreciate your explanations and efforts.
beautiful video, well spoken and thought out. best video i've found on this topic
Thanks Geoffrey, nice effort all around and will serve me well as a primer on the subject as corrosion is part of life on boats and Im always working on mine. Slip in abit on passivation and this would be the hand out on all the boat bulletin boards! Cheers and many thanks for your work! CmCod
This is an excellent tutorial on rust removal. Thanks for making and sharing this video.
Fantastic, finally some actual information (and very useful information at that) instead of high-res, time-lapse beauty shots. Thank You!
Now, please please please do a video explaining the best way to treat a deck. That information is of little use to me, but it would make my day to hear you talk for 20 minutes about all the best ways you've learned to take care of your deck (preferably with copious "accidental" innuendos, delivered totally dead-pan)!
Thank you for your effort in explaining the array of solutions quite deeply.
Excellent descriptions. All of your plating videos are excellent. Thanks
Thank you for the video, it helped a lot. I used HOT citric acid yesterday and it worked great.
Love your work Geoff, I have only used vinegar in the past but i will try one of the other methods next time to see
I loved your video as I have used mostly white vinegar with salt and have had acceptable results but I really loved the ending where you threw down the real tool for rust removal of large items as I also love my angle grinder and to me it's the most versatile tool in my shop.
Great video! So much value! I would have never thought vinegar was so weak, I've used it in the past with good result but as you said I left stuff in there for a long time :') Thanks man!
Thanks Black Beard. I think vinegar works ok if you give the part a scrub every so often to help it along, but I wanted to keep the comparison with the other acids so I didn't touch it.
Very good explanation, explains the chemical reactions concisely and the results.
LOVE that outro, wasn't expecting it at all. Subbed and liked. Good vid, thanks.
👍 Thank you again (I've watched this in the past)
I am so glad I watched again ... your presentation & clarity is excellent ! I love the chemical explanations, they are so clear.
Much appreciated 🙃
Ted from Downunder across the ditch 😉
Bruddah you nailed um. Straight to the point, just the info we needed. Mahalo for making this.
Informative video. Enjoyed. Saw what you did there with the outro tune! Couldn't help but blow some air through my nostrils.
That's called a scientific approach: covering all the why's & wherefores. Excellent!
I very much appreciate this, I am looking to do some work on tools at home, and this will help me with a direction.
Worth bookmarking. Practical, helpful, well done.
Great stuff. Been using some of these methods for years but the explanation is just amazing. Like a boss for sure.
Excellent comparison video. I have some rusted brake discs to clean up, so I'll probably go with phos.acid at 40%, which worked well on rusty scaffold fittings. It's good to see you used a proper electrolysis pencil, too. They cost more than regular flat pencils, but they last a long time.
Nice work. Both clarity and conciseness.(SP?)
THANX
Excellent tutorial. Really well explained. My preferred methods are Hydrochorlic and Evaporust. I heat my Evaporust in a little boiler and it works brilliantly. As you say its not cheap but you can use it over simply by filtering . It does leave a black film though when it ages and you have to scrub it off and protect against flash rust if youre not painting straight away . Tool steel with high carbon will also stain black.
Deservedly well received video. Thank you for sharing your knowledge so succinctly.
Finally, someone who knows what he’s talking about. Thank you, that was really informative. I watched the video several times.
Really good tutorial - Thanks Geoffrey!
Thank you man . great video. Helped me save lots of time of search and work
The lemon juice trick saved one of my stained glass windows that I'd had to leave sitting for several months! The flux wasn't getting the copper foil clean and every thing online said vinegar but that wasn't making any kind of difference. I tried lemon juice and was finally able to clean up the copper so I could solder it. Thank you!
Hmmm. Copper is an entirely different metal, right? The topic here is iron oxide, the rust formed with materials with a ferric content.
@@boxsterman77 That doesn't mean that copper doesn't form a patina that makes it impossible to solder. Copper foil is too fragile to scrub away the patina without destroying the foil. Does it really matter that it wasn't exactly what the topic of the video was covering if the information helped?
@@JanecShannon On the contrary, this made the video even more educational. I'll keep this in the back of my head for later.
GREAT video! This is exactly the comparison I've been looking for! Oxalic acid is often purchased under the brand "Bar Keeper's Friend" in the United States. I love the scientific summary about how they all work differently too! Thank you!
This is great... would love to hear more about safe and responsible disposal of the electrolytes / used chemicals. Excellent stuff thanks.
The best video on rust removal, period.
Excellent video! Thank you very much. It's an excellent summary of all the common options. I think I'm going to go with the broccoli mash option.
Hi Geoffrey, you are the first person I have heard pronounce water correctly. Thanks ;-)
Excellent demonstration. One of the better ones I've see if not the best.
I've found dipping parts in a 20% Phosphoric acid solution and leaving for up to 24 hours dependent on severity of rusting to be the most effective method for 100% removal. As you mentioned it will corrode and etch the steel, but after a full 24 hours I've found the effect to be truly negligible and the etched surface left is also excellent for painting.
Yeah, phosphoric acid is the way to go. Infrared heater (conductive heat) will speed up the process. The colder it is, the slower the reaction. Does not eat steel much at all.
Great and thorough video, best I've ever seen on the topic! Have you tried mixing vinegar with washing soda for the electrolysis? I've heard it works better than water but dunno! Thanks and God Bless!
Thank you Geoffrey for your excellent videos and restorations, keep it up!
Greetings from Austria
Cheers Viktor
You really did a great work by explaining every method in detail. Thanks man
Great video - Evaporust is about a quarter the price in Canada. Awesome stuff especially for thin tin work - it. A 13L container is about 100CDN. it seems to last a long time and seems to leave an oxide that prevent rusting.
Great video, I try to always use electrolysis as you can recover the item. I had a badly rusted ride on mower deck that I made a custom tank to run the electrolysis in and after a couple of days I could weld the brackets back in place and returned the mower to it’s useful state
Awsesome video ! thanks and congratulations on your explanations
Amazingly competent/complete. Thks
Well done Kiwi, very educational and easily understood through your presentation style and chemistry. Appreciate you taking the time to help others.
Thanks
Very good video with great information. There was just enough chemistry to explain what was occurring during the rust removal, or metal in some cases, I have been looking for this type of information for several months. I have completed several projects involving large rusty cast iron parts. I used molasses because I heard it did not damage the base material, but was very effective in removing rust. I did not want to use harsh caustic acid or damage these antiques with sand, water pressure, or mechanical methods. My friends suggested I just sand blast the parts. After they saw the results of the projects they thought differently. I also found out that this method loosens frozen threads and cleans areas grinder wheels or brushes can't reach. I believe you are correct about the oxilic acid in the molasses being slow and not as effective as other solutions, but given the length the part is soaked gives time for secondary chemical reactions to occur. It has been observed and noted, but to my knowledge the byproduct of that chemical reaction has not been accounted for. That secondary chemical reaction is the fermentation of the sugar as part of the molasses to ethanol. I am no chemist, but see if this makes sense. I didn't take time to balance the equations.
C6H12O6 > C2H5OH > CH3CO2
Excellent and thorough explanation...and why I nearly failed chemistry. I noticed the Boeing T-5 in the background of your final shot. Viewers should know this is an excellent rust preventer and needed after removing the rust by most methods shown.
Also I noticed you putting your finger in the citric acid. I once prep'd a garage floor for epoxy coating with citric acid... unwisely wearing flip-flops. It messed up my toenails pretty badly. Live and learn, or watch TH-cam. Thanks again.
Vinegar. There are a lot of guys out there who swear by vinegar. I didn’t mean to imply that vinegar is useless. If you’ve got time or help things along with a bit of scrubbing, it works fine. The point of this video was to show how the methods stack up - not whether or not they would ultimately be successful. Every method in this video works.
fair enough, it does work, but with more time, days or a week in my experience, but that may suit sometimes, and its handy for small stuff thats not gonna fly in electrolysis
Hey, you mentioned Citric produces C0? Does that mean it's not safe to use in my bedroom for cleaning rusty stuff?
Vinegar truly not useless. I had serious doubts, but while I was waiting on my oxalic acid to come in the mail, I soaked some rusty sockets in vinegar for 2 days, taking them out and only lightly brushing them with a wire brush a couple of times (seriously, putting forth almost zero effort in doing so.) Only 2/10 had any rust left whatsoever, and on those, the remaining rust was tiny and difficult to spot.
Using vinegar to clean out a rusty 20 gallon air compressor tank and it definitely works. Just not real cost effective when you need 20 gallons of it, so gonna get some oxalic acid powder as it seems the cheapest way to make that much solution.
Heat the vinegar beforehand and gaze at it dissolving the rust!
Highly entertaining, informative. Well thought out. Well done.
Great video explaining the process. I used vinegar to remove rust from hand tools and remove rust from tools that I could easily had to trash them. It did not come out 100%. Definitely they came out how lot better and cheaper and very useable
How, can someone dislike such an interesting and well done video? Like your Job! Thanks Geoffrey - Tom from germany
this is gold information, you just help us save time, thank's mate, greeting from Bali
Awesome information, so well explained, if only all teaching was done like this. - Had to subscribe..!
Very well-explained! Thank you.
Very well done! Thank you for for putting this together!
A very good simple informative video, Thanks
I used concentrated vinegar (here inGermany called Essig Essenz) with 25% acidity. Costs about 0.70 EUR for third of a liter. Works much faster. I apply it with a brush and after some hours I apply some if needed. Then rinse it.
These acids though affect the metal surface and the molecular structure so that they more easily will rust again. So you need to keep them safe from humidity and treat them soon after with coating (varnishing or oiling or galvanizing etc.)
Bravo! A lot of great value in this tutorial. You wouldn't believe how many people do these and don't explain what they are using. The pace was easy enough to understand the information being conveyed. I own a cleaning company and use science and innovation to perform our duties. These videos like this are very good in explaining the "WHY". Awesome job keep them coming and I already hit the subscribe button.
Question: Would this process remove carbon and or heavy grease build up? Was thinking of using it on the metal grates on a stove top to remove all of the buildup which sits on most stove top burners.