Rust

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m (Notes)
(Notes)
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#Apply jelly with 000 steel wool, rub it in, and allow it to set for a couple of minutes. Don't let it dry.
 
#Apply jelly with 000 steel wool, rub it in, and allow it to set for a couple of minutes. Don't let it dry.
 
#Rub again with steel wool. Repeat a few times, and then clean the area. Dry it immediately.
 
#Rub again with steel wool. Repeat a few times, and then clean the area. Dry it immediately.
*Body panels can be sand blasted. However, it must be done carefully. The pressure of the sand hitting the body panels causes warpage.
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*Body panels can be sand blasted. However, it must be done carefully (explain). The pressure of the sand hitting the body panels causes warpage.
 
*There are so many different products and approaches for handling rust, that it can be mind-boggling for an average hotrodder.
 
*There are so many different products and approaches for handling rust, that it can be mind-boggling for an average hotrodder.
 
*Some people mentioned that professional body shops don't use POR-15 or similar rust "encapsulators" because:
 
*Some people mentioned that professional body shops don't use POR-15 or similar rust "encapsulators" because:
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#The major paint manufacturers like Sherwin Williams, PPG, and DuPont don't produce a POR-15 like product. This is thought to be because they couldn't possibly warranty such a product.
 
#The major paint manufacturers like Sherwin Williams, PPG, and DuPont don't produce a POR-15 like product. This is thought to be because they couldn't possibly warranty such a product.
  
The fact that POR is not used by manufacturers is also important.
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The fact that POR-15 is not used by manufacturers is also important.
  
*Can sandblasting "increase" rust? Or, if the rust is removed and the metal is sealed, shouldn't it never come back? Some thoughts on this are:
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*Can sandblasting "increase" rust? Or, if the rust is removed and the metal is sealed, shouldn't it be eliminated? Some thoughts on this are:
 
**Although sandblasting may appear to have removed all the rust to the naked eye, it hasn't really done so.
 
**Although sandblasting may appear to have removed all the rust to the naked eye, it hasn't really done so.
 
**It's caused by water in the air compressor line, as sand will harbor some moisture. Also, compressed air contains moisture. And, sand has salt in it. A moisture trap in the line should solve the problem with the water in the air line.
 
**It's caused by water in the air compressor line, as sand will harbor some moisture. Also, compressed air contains moisture. And, sand has salt in it. A moisture trap in the line should solve the problem with the water in the air line.
 
**Even high grade epoxies and finishes are not 100% impermeable to water and air.
 
**Even high grade epoxies and finishes are not 100% impermeable to water and air.
*POR is largely considered a "duct tape fix" or a "git-er-done" solution. It may be OK for the home hobbyist, but it's not considered the "right way" or the "professional way" to handle rust.
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*POR-15 is largely considered a "duct tape fix" or a "git-er-done" solution. It may be OK for the home hobbyist, but it's not considered the "right way" or the "professional way" to handle rust.
 
*Brands: POR-15, Zero Rust, Eastwood Rust Encapsulator. These are not rust "converters", they don't alter rust, etc. They are a coating intended to seal out air and moisture.
 
*Brands: POR-15, Zero Rust, Eastwood Rust Encapsulator. These are not rust "converters", they don't alter rust, etc. They are a coating intended to seal out air and moisture.
 
*Another argument against rust "treatments" is that many of them require the surface to be lightly rusted first. "Inducing" rust seems wrong to people.
 
*Another argument against rust "treatments" is that many of them require the surface to be lightly rusted first. "Inducing" rust seems wrong to people.
 
*Rust-protection products can either act as a coating, or as a sacrificial anode (explain).
 
*Rust-protection products can either act as a coating, or as a sacrificial anode (explain).
*Sand is not recommended for media blasting panels. It acts like little hammers, caused by compressive forces (analagous to hail). Use softer media (list examples).
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*Sand is not recommended for media blasting panels. It acts like little hammers, warping panels with by compressive forces (analagous to hail). Use softer media (list examples).
  
*If POR and similar products have a "lifetime warranty", explain how guarantees like that don't involve labor costs, losses, or other related costs.
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*If POR-15 and similar products have a "lifetime warranty", explain how guarantees like that don't involve labor costs, losses, or other related costs.
 
*One recommendation is: after sandblasting, remove some more of the surface metal by sanding with sandpaper. This is done to remove the salt, sand, moisture, etc. from the surface.
 
*One recommendation is: after sandblasting, remove some more of the surface metal by sanding with sandpaper. This is done to remove the salt, sand, moisture, etc. from the surface.
  
 
*After preparing panels, coating them with epoxy primer is recommended.
 
*After preparing panels, coating them with epoxy primer is recommended.
*Phosphoric acid or muriatic acid are recommended.
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*Phosphoric acid or muriatic acid are recommended as well.
 
*Rust forms so quickly that if you are sand blasting, media blasting, etc., the surface rust will begin to form before you finish the job.
 
*Rust forms so quickly that if you are sand blasting, media blasting, etc., the surface rust will begin to form before you finish the job.
 
*Many panels have seams, hems, and bends that are inaccessible by blasting, and hold moisture and rust.
 
*Many panels have seams, hems, and bends that are inaccessible by blasting, and hold moisture and rust.

Revision as of 11:52, 3 August 2006

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