I was cleaning some rusted bolts and nuts with muriatic acid. I think it was a 31% solution available at hardware store. And it was diluted even more with water. Being curious I left some parts in the tub for an extended acid bath. They ended up pickling. Surprised for sure.
Great Video. Thanks for posting this/sharing. I've been looking for a DIY alternative to Caswell's black oxide kit - I want to blacken several truss plates to look a piece of wrought iron plate and I knew there had to be a simple 'at-home' method. I know I could also heat the pieces and dip them in used motor oil but that gets messy and I don't want to be dumping used motor oil all over my driveway.
In the firearm world its called slow rust bluing. One of the best ways to do a firearm because you are making it rust and leaving nothing more to rust, only thing that the firearm is harmed by is a politician. FYI, it's not that your solution wasn't working anymore, it's the rust time, that's why we call it slow rust bluing. Fabulous job btw....
Doing this to a couple drill bits as a watch asban experiment. A flathead and a 1/4" hex to 1/2" socket bit. Ill tell you if you have any cuts on your hands that vinegar will sting lol. And it leaves a kind of mucas layer behin. I know you may thing that is funny but it snot.
The "black" that is on the pipes is a varnish that is used to keep them from rusting on their trip from china. They won't oxide/rust until you remove this coating. You need to use a paint thinner to dissolve the varnish. Acetone will not remove varnish. I am a pipefitter of 38 years in the trade.
I am not a chemist so I err on the side of caution. Don't mix hydrogen peroxide and vinegar together in the same mixture. This can create peracetic acid, which may be toxic and can irritate your throat and lungs, eyes and skin. If outdoors with good ventilation and with a good acid gas filter mask, it might be ok.
@@yourboard5506 It creates Peracetic acid which is simply stronger than Acetic acid - most of the cautions you see about that acid are related to high volumes of exposure.
So i should add the vingar to the salt and peroxide? Im mixing like an 1/8 a cup for a couple hex bits. edit: i mixed in the vinegar to the h202 and salt. It works. One thing to know. Light kills peroxide. Specificaly uv light. That's why it comes in a dark brown bottle so keep in it a dark spot. Thanks for the video bro.
Good observation. Yeah, don't try that at home. Definitely not a good idea and makes a bad image. I'm pretty sure it was there only briefly for the video. Good thing the stove only get hot where those round circles are on the stove. I guess I should have been more worried about that rather than the explosion happening if I had dropped one of those metal pieces and craked my wife's glass cooktop.
It takes at least an hour to get through all the steps, prep and cleanup. Longer the more pieces you have. Would much faster if we had bigger pans and a basket to transfer all parts at one time.
Degreaser: TSP and / or Acetone Pickling: 6% white vinegar Oxidizer: hydrogen peroxide + small amount of salt. Boiling water. Alternate between oxidizer and boiling water several times. Remember not to mix vinegar and hydrogen peroxide
I was cleaning some rusted bolts and nuts with muriatic acid. I think it was a 31% solution available at hardware store. And it was diluted even more with water. Being curious I left some parts in the tub for an extended acid bath. They ended up pickling. Surprised for sure.
Great Video. Thanks for posting this/sharing. I've been looking for a DIY alternative to Caswell's black oxide kit - I want to blacken several truss plates to look a piece of wrought iron plate and I knew there had to be a simple 'at-home' method. I know I could also heat the pieces and dip them in used motor oil but that gets messy and I don't want to be dumping used motor oil all over my driveway.
In the firearm world its called slow rust bluing. One of the best ways to do a firearm because you are making it rust and leaving nothing more to rust, only thing that the firearm is harmed by is a politician. FYI, it's not that your solution wasn't working anymore, it's the rust time, that's why we call it slow rust bluing. Fabulous job btw....
LOL
Doing this to a couple drill bits as a watch asban experiment. A flathead and a 1/4" hex to 1/2" socket bit. Ill tell you if you have any cuts on your hands that vinegar will sting lol. And it leaves a kind of mucas layer behin. I know you may thing that is funny but it snot.
Nice video. Thanks for sharing!
The "black" that is on the pipes is a varnish that is used to keep them from rusting on their trip from china. They won't oxide/rust until you remove this coating. You need to use a paint thinner to dissolve the varnish. Acetone will not remove varnish. I am a pipefitter of 38 years in the trade.
Thanks for clearing up the varnish question. Some had it and some didn't. For indoor use I'm good with the varnish.
Thumbing up. It's better to try to use something like kerosene I think.
Im curious about the mixing of vinegar and hydrogen peroxide comment. Almost all the info ive found on rust bluing they mix all 3 together
I am not a chemist so I err on the side of caution. Don't mix hydrogen peroxide and vinegar together in the same mixture. This can create peracetic acid, which may be toxic and can irritate your throat and lungs, eyes and skin. If outdoors with good ventilation and with a good acid gas filter mask, it might be ok.
@@yourboard5506 It creates Peracetic acid which is simply stronger than Acetic acid - most of the cautions you see about that acid are related to high volumes of exposure.
So i should add the vingar to the salt and peroxide? Im mixing like an 1/8 a cup for a couple hex bits. edit: i mixed in the vinegar to the h202 and salt. It works. One thing to know. Light kills peroxide. Specificaly uv light. That's why it comes in a dark brown bottle so keep in it a dark spot. Thanks for the video bro.
Thanks,I want solution to black oxidation of tin plated parts
so what we see and buy from a black oxide solution is just a hydrogen peroxide with salt?
Commercial black oxide concentrate is more than this. It's typically a mixture of phosphoric and other acids that corrode much faster.
Are thos steel pipes not galvanised?
Black pipe. Not Galvanized.
You seem like a very smart man. Why in the world do you have highly flammable and potentially explosive acetone sitting on top of a heated stove?!?!?
Good observation. Yeah, don't try that at home. Definitely not a good idea and makes a bad image. I'm pretty sure it was there only briefly for the video. Good thing the stove only get hot where those round circles are on the stove. I guess I should have been more worried about that rather than the explosion happening if I had dropped one of those metal pieces and craked my wife's glass cooktop.
Ha, my wife would freak if I did something like this in the kitchen.
And so did mine. But after the fact. I was well into it before the smell got her attention.
How long it goes
It takes at least an hour to get through all the steps, prep and cleanup. Longer the more pieces you have. Would much faster if we had bigger pans and a basket to transfer all parts at one time.
He is obviously not married. I would have to do this outside or in the garage.
My second batch was outside on the camp stove and I still got complaints about the smell. Best to do it outside and don't open the door :)
It not about married
Can you write the inggridient for this project
Degreaser: TSP and / or Acetone
Pickling: 6% white vinegar
Oxidizer: hydrogen peroxide + small amount of salt.
Boiling water.
Alternate between oxidizer and boiling water several times.
Remember not to mix vinegar and hydrogen peroxide
@@yourboard5506
What % is the hydrogen peroxide? Thanks.
@@platinummind1697 3% is the typical household hydrogen peroxide. That is what I used.
@@yourboard5506not positive the boiling is necessary. I remember bluing guns with tap water in the bathtub.
Two years later how is the finish? And are you still married?😂🤣😂
Haha, yes, still married, but only because I didn't do that in the kitchen again. Finish still good as it came out back then.
This is rust bluing.