Is Ospho any good?

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This stuff works great. Follow the directions, and paint it on, because it should not be sprayed due to the danger of inhaling it. The ONE thing it does not say in the directions is to rinse this residue off before painting. … Ospho stabilized the rust and the paint has stuck firmly.

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OSPHO safely dissolves bleeding rust from many painted surfaces. … Merely remove loose paint and rust scale, dirt, oil, grease and other accumulations with a wire brush or pressure washer and let dry – apply a thin coat of OSPHO as it comes pre-diluted in the container.

Beside this, How long does Ospho take to work?

20-60 MINUTES

Likewise, Can I paint over Ospho?

Ospho is a rust treatment. It turns rust into the black something or other that is stable and you are able to paint over it. If you went through the process of going down of bare metal then you are fine.

Also, Can you Bondo over Ospho?

Ospho is phosphoric acid & is meant to dry on the metal. It kills the rust & etches metal for good adhesion. One other thing…..do not apply bondo to bare steel. It s/b primed w/epoxy primer first.

Does Ospho kill rust?

Yes, it would work on a rusting metal pole. It’s an acid (phosphoric). … Remember that this will remove the rust, but it will not bring back steel that is already rusted away. After applying the Ospho, you can spray the ground with a water hose to wash away excess Ospho that may have dripped.


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Can you put body filler over rust converter?

You don’t want to put filler over rust that hasn’t been stabilized because it can cause the filler to release from the surface.

How long does rust converter take to work?

approximately 20 minutes

How do you neutralize Ospho?

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.

How long before you can paint over Ospho?

24 hours

Do you sand after rust converter?

You will want to remove large rust and scale particles with a stiff bristled brush, hammer or sandpaper. The object of this step is to get any loose or flaking rust off as it does not provide a stable surface. … Rust Converter cannot penetrate grease or oil, so clean and degrease the surface first, then let it dry.

Can you fiberglass over rust converter?

Re: Rust converter and bondo If you have any holes through the metal at all. Whether it from the rust or just poked through. Rub fiberglass resin on rear of that panel to seal it so rust does not eat it out from behind after you fix it. If any larger holes than pinholes just lay a layer of resin and mat on back.

Do you have to sand rust before painting with Rustoleum?

A primer can help paint adhere to a rusted metal piece, but you still must first remove as much loose rust as possible from the surface first. … from the metal surface, then run over it with a wire brush or sandpaper to scrape off as much rust as possible.

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Do you need to sand before using Rustoleum?

Sanding is not required for most surfaces. We recommend sanding high gloss surfaces with medium grit sand paper. Slightly sanding any surface will promote adhesion and coverage.

Do you need to paint over rust converter?

Is It Necessary To Apply Paint Over Rust Converter? Although it’s not required, if your surface is exposed to the elements, Promain would highly recommend applying two coats of a quality oil-based paint such as Centrecoat Fast Dry Gloss over the Rust Converter.

How do you prep metal for rust before painting?

All it takes is a pass with a soft cloth dampened with a homemade degreasing solution—four teaspoons liquid dish soap mixed in one gallon of warm water—followed by a “rinse” using a water-dampened rag. Let the metal air-dry completely before breaking out the primer.

Is it OK to spray paint over rust?

Can I spray paint over rust? Yes, you can spray paint over rust. Before you paint, take the time to prepare your surface properly. Spray paint surface preparation preparation is extremely important and is the best predictor of how long your new paint finish will last.

Can you weld over rust converter?

You can weld over it, but using a mig you get more splatter and then you still need to apply the converter over the weld. Do it once…. Weld, rust converter, primer, paint.


Last Updated: 16 days ago – Co-authors : 7 – Users : 11

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