Rust

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(Notes)
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==Notes==
 
==Notes==
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===Sandblasting rust==
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Can be done, but must be cautious. Use a small sandblaster, or a sandblaster set on low (expand on this: distance, angle, etc.).
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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:
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**Although sandblasting may appear to have removed all the rust to the naked eye, it hasn't really done so.
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**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.
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*Many panels have seams, hems, and bends that are inaccessible by blasting, and hold moisture and rust.
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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.
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*There are many different products and approaches for handling rust.
 
*There are many different products and approaches for handling rust.
 
*Rust encapsulators are common in the hotrodding industry. Some people think that they won't get rid of a problem, and may make it worse. Oftentimes its is how you apply and prepare it.
 
*Rust encapsulators are common in the hotrodding industry. Some people think that they won't get rid of a problem, and may make it worse. Oftentimes its is how you apply and prepare it.
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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.
 
**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.
  
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*Phosphoric acid or muriatic acid are recommended as well.
 
*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.
 
*Body panels can be sand blasted. However, it must be done carefully (explain). The pressure of the sand hitting the body panels causes warpage.
 
  
  

Revision as of 16:36, 9 April 2007

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