This is great information for anything metal including our vehicles! Thanks for sharing!

very good and impressive demonstration, thank you

Thanks for sharing. I have some of my Dad's and Grandpa's old tools. I can restore them now! I think of them every time I use those old tools.

Great tip! Excellent video, straight to the point.

That's awesome thank you from Florida, kind sir!!! 👍🏼👍🏼

I would apply 40% thick(ish) coat with a brush. Then wash it away (with a pressure washer), let it dry and spray with 20% mix. Once thoroughly dried, paint over with a (zinc phosphate) primer.

Great demonstration

Thank you so much for making this video. I hope I can find this stuff at Walmart or Lowes...

thanks for the video, very helpful!

Thank you for an excellent video! Carry On Sir!

Great video it was nice talking to you a couple weeks ago when I came in for the screen door rollers

super helpful thank you !!

Thank You!

Thank you.

dope video, thank you much

That black coating is actually a more stable version of rust (it has an extra oxygen atom).

Great video. Thanks Mr.Hardware. Is it a special kind of paint you use when the phosphoric acid has dried ? Or is it a clear coat ?

Great video, & I have a question. This is probably a dumb question, but can you sand that afterward & get it shiny? Thank you. I've heard of Ospho. I've had a little rust problem on the roof of my truck. This is probably the way to go from what I've seen so far. Thanks

Sheeze-a-nut looking so nice

Thank you for his video, I have never used plastic steel wool, is there a v=brand you recumbent and what grid do you use ?

Very informative video. I am planning on using it for undercoating my truck. Do you think I can spray on CRC inhibitor after it does its thing. Also any problems with rubber or plastic? Thank you

Would this be a surefire way of protecting and ensuring a rust-free surface _after_ using more aggressive methods such as media blasting or dustless blasting? Can imagine this would really prolong the life of a steel boat hull after first removing the thick layer of rust, along with compatible paint, given that it not only protects but would also get any fly rust and would apply its magic to any missed pits or dents.

A proper restoration would involve removing the wood handle so all the metal can be treated, as well as cleaning up the handle and coating it with boiled linseed oil. After treating the metal, it can be coated with any kind of auto wax then wiped clean.

"A piece of grandpa lives on!" Thanks.

don't ruin perfectly good patina with black spray paint. use clear coat or wax.

Does Klean Strip Concrete & Metal Prep leave behind some latex or acrylic coating? Is there a rust converter that only uses acid? Seems like some latex coating will negate the ability to use a primer. Ultimately, you're limited to the adhesion of that latex or acrylic.

Very helpful

I've successfully used Ospho in a number of applications and have been very happy with it. Recently, I've wondered about using it to pretreat concrete rebar. Do you have any experience with this or know anything about the long-term benefits in such an application?

What's your opinion on having to neutralize it with water before you paint

With these products work on an iron railing?

The metal gets a black coating on it are you supposed to paint over that or rise it off first and then paint over

I live in Thailand, we can't buy the products easily here but I can buy the acid on its own. Any ideas what I would add to the acid to help it bond?

Nice video just one question. You don't have to neutralize the acid ?? Before primer or paint?? Thank you

What do I do if using epoxy or urethane paint and not oil based?? Like painting cars Thank you

Did you just mix those half and 1/2 with that big green jug with the must for rust bottle

my garage doors is rusty, but a lot of the rust is underneath a layer of paint (pretty sure its latex) and looks like bubbles in the paint. will this work though the paint?

hi would using phosphoric acid clean up the rust on car body panels and parts

When treating, I'm getting white powder on the metal afterwards unless i wash it off immediately but as a result, the steel will flash rust. Any advice?

can i use it to take the rust from my body, ? i have 96 years old and i feel rusty...

Why does it have to be oil based paint? Can I use rustoleum enamel paint?

I did underside my Jeep. Can i leave those white residue there?? Or all white residue has to come out??

Can you use it on car rust?

How do you get rid of the white residue? I washed it off with water but it’s not coming off

What about coat of rust protector instead of oil based paint?

Aahxygeen..... oxygen. This guys accent is awesome braaaah.

I believe I would not have painted it. Just use the acid; wipe it down; wash it; leave. Certainly not a gloss black. Maybe, a flat or satin grey. Naaaaa, leave it natural. But, thanks for the lesson on how to use the phosphoric acid.

aAren't you supposed to rinse it off with water after a few minutes? I had a very old bottle of the stuff that said so on the label.

I have pure phosphorus acid. But what the HELL is used as a base/carrier to prime n convert. Otherwise my steel turns white. If you've ever used ", rust converter". It turns BLACK! What do I mix it with???

I want to thank all you Yankees that have NOT moved to Texas or the south. I love Yankees that stay up north.

Don't you have to neutralize with baking soda?

If I want to spray on a oil based truck bed coating to freshly etched metal using phosphoric acid, would I need to remove the acid for better adhesion? The directions for the truck bed coating says bare metal works best. But I don't see why the acid wouldn't help it stick better, just like the paint?

What percentage is the acid wash ? 30-99 percent

Plastic steel wool??

Like phosphoric acid that is found in Coke?

derusting inside of a fuel tank would be more challenging, because how to ruboff phosphoric acid remains

Total different process in automotive..The ONLY acid cleaners SPI recommends is Opsho, PPG and DuPont metal preps as long as their instructions are followed to a tee. Use any other system you want, just do us a favor and use no SPI over them. There can be NO shortcuts for good results. Ospho, is a great product for automotive if used right, we give scare warnings because we want people to call so we can make sure they know how to neutralize it, so no problems will arise. Only one way to use and here it is: Use as needed and apply as many times as needed to get the spot Clean let dry and leave for months if you want, don’t matter. To neutralize the Ospho MUST be wet, so if dry, re-wet with itself and let set one or two minutes and with a clean rag and water, wipe off like washing the car and then dry. Next, then da car with 80 grit, clean with 700-1 wax and grease remover, let set an hour and coat with an epoxy. Notes of interest (maybe) If you try and sand dry film off you will lose 40-60% adhesion (per adhesion tester as some will embed itself in metal and amount depends on how long the Ospho has been on panel as we do know acid films degrade with time but due to many factors we cannot pinpoint a time frame. The tape is not a test, use razor scraper after 7 How does it fail? Here are a few calls. Washing car and hose bounced up, hit car and paint bubbled. Kids finished ball game and ran by car and tossed ball gloves on hood, next day two big bubbles. Wife got bag out of trunk, closed trunk and set bag on truck to play with keys, next day a bubble there. My FAVORITE TECH CALL at least once a month, my body filler dried and sanded great but Then I got to metal is was gummy, DO I HAVE A BAD HARDENER? Nope only one thing, you applied it over an acid film..

Why not actually remove the rust with muriatic acid, then neutralize with baking soda and water, then treat with phosphoric to convert and seal the remaining rust?

Who ever did the editing for this video,,don't quit your day job...holy shit it's tough to watch with the video cutting out every few seconds

I clicked on this because the title said "Phosphoric acid". Rather than a phosphoric acid-BASED product, have you tried using just phosphoric acid by itself? (the stuff can be bought plain, so i was thinking about trying that option on some rusty metal; but if someone has already tried it and had bad results, I won't bother with the plain stuff)

Hi I like how you tell the truth about way to remove rust to prevent new rust use car wax .. I subscribed check out the other ways to remove rust on youtube

The cuts are too much

🤷‍♂️🤦‍♂️

After I used phosphoric acid Iit turned yellow after I washed it off sprayed it will acid again didnt wash it off it turned white and oily

Nothing, and I mean NOTHING beats phosphoric acid as a 1) Rust remover, 2) Rust converter and 3) Primer. As stated, works by pulling oxygen out of iron oxide (ie. rust) and converts it into passive iron phosphate (black/grey). Needs to be at least 20% phosphoric acid mixed with water. Heat speeds up the process dramatically. To put it another way, in cold nothing much happens. You can thicken it with (pink) wall paper adhesive powder to apply a thick(ish) coat with a brush.

Man... This was going good until you pulled out the spray paint and painted that saw. Sinful in so many ways!

yeah but that stuff is really expensive... i wonder if coca cola would work

Just use hydrochloric/muriatic acid the rust will be gone in seconds but you have to neutralize it after the process with soda-water solution and rinse it well with water. So much faster and better than phosphoric acid.

Please find a new videographer...