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Author: Subject: paint over rust
DENNIS
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[*] posted on 9-14-2017 at 07:19 AM


Quote: Originally posted by AKgringo  
One word of caution, phosphoric acid, or the products used to convert rust will etch concrete immediately. Protect your floor if you are working on a slab.



And....never but never clean your toilet with muriatic acid for the same reason. It'll be like lining the bowl with sandpaper.




"YOU CAN'T LITTER ALUMINUM"
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rts551
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[*] posted on 9-14-2017 at 09:16 AM


From experience. If your metal is thick you can cover the rust. If it is sheet metal do like Bob ANd Susan say. Cut it out...otherwise it just comes back from the back side or creeps sideways.
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surabi
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[*] posted on 9-14-2017 at 06:46 PM


[rquote] And....never but never clean your toilet with muriatic acid for the same reason. It'll be like lining the bowl with sandpaper. [/rquote]

Well, I use muriatic acid to remove mineral deposits in my toilet evry few months and I haven't had that problem.
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Alm
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[*] posted on 9-14-2017 at 08:08 PM


Quote: Originally posted by rts551  
From experience. If your metal is thick you can cover the rust. If it is sheet metal do like Bob ANd Susan say. Cut it out...otherwise it just comes back from the back side or creeps sideways.

So Bob was right again. You can't replace a rusted out chunk of metal with a coat of paint. Duh :) ...

How does this miracle paint compare to Rust-Oleum that costs 3 times less?
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del mar
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[*] posted on 9-14-2017 at 08:30 PM


Quote: Originally posted by Alm  
Quote: Originally posted by rts551  
From experience. If your metal is thick you can cover the rust. If it is sheet metal do like Bob ANd Susan say. Cut it out...otherwise it just comes back from the back side or creeps sideways.

So Bob was right again. You can't replace a rusted out chunk of metal with a coat of paint. Duh :) ...

How does this miracle paint compare to Rust-Oleum that costs 3 times less?


it doesn't and yes its a miracle paint and I was just hoping for a source here in baja norte. :yes:
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pacsur
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[*] posted on 9-15-2017 at 06:49 AM


Having a finishing business I deal with all types of rust, rust does not always start on the surface as it can come from inside also, cast patio furniture for example is usually made using whatever they can find and melt down, old transmissions, aluminum cans, or any scrap metal they can find, the white powder on your patio furniture is white oxide, or rust.
Ferrous metals that are thick enough can be sandblasted and should remove all the surface rust, but unless you seal the metal from the air(or chemically treat) it will return right away, multiple coats of paint can stop or delay any further oxidation, powder coating is much thicker than paint and that's why it seals and protects so well, although weld locations will usually start rusting first, most welds spots have microscopic pores and powder will bridge over the pores and not seal as a liquid paint would, so when there is enough moisture in those little holes oxidation starts and then creates little bubbles as it expands.

Everything I've read concerning por15 has been positive, it seals your rusty metal and is very strong, and yes you do need a topcoat if it will be exposed to UV, it's usually used for car frames and floorboards.
There are not many solutions for light gauge sheet metals, but there is a big difference between say 14ga and 16ga, 14ga will last significantly longer than anything lighter.
Also minimal maintence will extend the finish life on most items, mainly just washing or wiping down with fresh water to remove salts that build up from our ocean breezes.
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Terry28
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[*] posted on 9-15-2017 at 09:15 AM


Rust never sleeps......



I'm wasted and I can't find my way home....S. W.
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