Hot Rods Preserving bare metal

I KNOW this subject has been hashed out before------But I have no clue how to find the posts. I have a trophy piece in D. A. polished steel. It stays in doors. After 3 or 4 years its getting pretty rusty. I don't mind D.A.ing it again but I would sure like to be able to preserve the look and prevent the surface rust. Bill Rinaldi

 

Gibbs Brand Penetrating oil.....

http://www.jalopyjournal.com/forum/threads/about-gibbs-brand-penetrating-oil.137392/

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X2^^^^^

 

Is it sheet metal that will get painted? What we do is treat it with 'Ospho', an acid. Here's the process (the auto manufacturors do it too), the Ospho etches the metal and and leaves a layer that will not rust but its' best not to paint directly on it, it needs to be 'neutralized'. Here is the process we follow, we wipe sheetmetal with Ospho and allow to dry, after that we wipe it again with Ospho reactivating the first layer, while the surface is still wet with the 2nd coat of Ospho we wash it down with water to neutralize the Ospho. Then the surface is ready for primer, the surface etched and will not rust.
The chemical engineers say you can wash the first layer, you don't have to let it dry and do a 2nd coat - the manufacturors dip the raw sheetmetal into ospho, then into a 90% solution of ospho and water before priming - but we feel the ospho has to work on the metal for as long as possible so we let it dry and then reactivate.
I have exposed sheetmetal that I did over a year ago that have no rust etc and I am in Virginia a very humid area.
Ospho is a brand name and can be found in the same area as Mineral Spirits etc, get it by the gallon, apply it with a shop cloth. Its an acid but not overly powerful, safe to work with.

 

I just give it a light coat of spray bomb zinc chromate. Sands off easy till your ready for the final coatings.

 

I've been part of it too Bill and I'll say it again; My 66 Suburban was completely stripped to bare metal and prepped with Rust Mort, it has been inside of an unheated shop for many years in this condition, and this thing has a lot of sheet metal.
Other than dust and a few spots where the "Looky Lews" have touched it, it remains as it was left.
You dont want to be messing with a bunch of these every six months untill painted.

 

Gibbs

 

Don't tell Ryan, but for me, the hamb search sort of sucks.....I just do a google search. For this topic, I punched in " rust prevention hamb". It worked pretty good.

 

Rust Mort works well as does all the acid based products. Just make sure to rinse well

 

Just make sure you protect your cement floor, it will leave stains.

 

If it stays indoors then try Picklex20. Spray or wipe on and then wipe off. NO rinsing with water!

Cleans, preserves, etches and preps the metal. No additional prep is needed to paint, even if it's a few years later (other than a normal wipe down). I've used DTM and 2k primers with good results.

 

Rust Mort treated metal will rust if not primed. It is not a rust preventive product. It converts rust but does not prevent new rust from forming on the panel. I've used many gallons of it.
Do you want a dry surface or oiled surface?

 

I've used it and I know it works because I brushed that stuff onto some bare metal (the stuff I used looked like green water) and those metal pieces sat for months before I actually spray painted them and they did not develop any rust at all. Not even light surface rust.

 

I'm hearing you loud and clear.....

Unfortunately it doesn't take you where you want to go. The best way to get results by using any search engine is by typing in " :jalopy journal " after your inquiry ......"channelled 32 pickups:jalopy journal". It. Will then list every result from the H.A.M.B.


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This is what I use also and have found it superior to everything else I have used on metal.

 

Thank you all----I really appreciate it. I'd like to try some GIBBs. Where do you get it? Bill

 

Auto Tech Mfg has a metal prep that says you can leave on bare metal for protection


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http://www.gibbsbrandlubricant.com/

 

Check the Hamb classifieds under Misc for Sale. There's a guy named terry k who sells it.

 

If it's a trophy piece that just sits inside, why not spray come clear on it?

 

Wow, you're correct.
That works better. Thanks

 

cretin,----It is sprayed in clear. It surprised me that after 2 years or so, surface rust was starting to appear and after 4 years, it's Rusty!!! Thats the reason I've decided to refinish it by D.A. and Roto disc and coating it in Gibbs. Bill

 

Happy with Gibbs. Since I'm using the truck now and then, I need to keep it up every 2-3 months. I'll wipe off the surface dirt, spray with Gibbs and give it a quick "polish" using a DA. On the DA, hook and loop with a green scotch brite pad stuck on. Work the Gibbs in, wipe off, go.

 

The most traditional way of preserving bare metal has always been to paint it. Back when I was a kid, there were no bare metal cars.....lots of cars with lacquer prime spots, or complete primer paint jobs, but not bare metal. Little did we know how useless that primer job protected the bare metal underneath.

 

You must not have done it right. When done proper the metal will have a blueish-grey color to it, I've got pieces that we did years ago - floorboards etc - that haven't rusted rusted or anything and I am in a very humid area. We treat them twice, we apply it at 100% and allow it to air dry, the next day we treat it again and then wipe it off with water and rag. Thats all it takes. We use it only on new metal, we clean off the protective oil the mfgr applies to then treat it with ospho.

 

Amsoil also makes a product called M&P "metal protectant" similar to Gibbs I think.

 

Ospho tech advice gave same answer and I got flash rust quickly after washing the 2nd coat then air drying yesterday . Maybe the roof was heavy rust for years.

 

I am getting pretty good results with Eastwood Fast Etch. It is phosphoric acid that leaves a zinc phosphate coating on metal which apparently can be removed pretty easy with thinner when the time comes. I did not use it to strip ... just to keep surface rust from reforming. It has been 95% successful for 2 years now.

https://www.eastwood.com/rust-remover-eastwood-fast-etch.html