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Old 04-22-2010, 11:01 PM
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degreasing/cleaning before sealing?

What is the correct way to degrease/clean a car before you seal the bodywork with epoxy primer? After you have all of the body filler work done on the car I am afraid to put anything on it because it might get absorbed by the body filler. I have some SPI water-based cleaner/degreaser and I also have some acetone.

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Old 04-23-2010, 12:11 AM
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A common mistake is to use wax and grease remover and not allow sufficient dry time; this will cause big problems.

I use:

quick evaporating wax and grease remover,
dilute dish washing soap/water,
acid etch exposed metal,
rinse acid etch with water,
then ammonia/distilled water.

I would not use acetone or other harsh solvents.

Make sure what you use leaves no residue.

Make sure flash rust is sanded off bare metal first.
Some skip acid if certain all flash rust is removed.

Last edited by 001mustang; 04-23-2010 at 12:19 AM.
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Old 04-23-2010, 06:39 AM
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Quote:
Originally Posted by xpsyclonex2002
What is the correct way to degrease/clean a car before you seal the bodywork with epoxy primer? After you have all of the body filler work done on the car I am afraid to put anything on it because it might get absorbed by the body filler. I have some SPI water-based cleaner/degreaser and I also have some acetone.
Keep the acetone far far away from your project.
Use the SPI wbased cleaner, let it dry for ample time, then spray the epoxy.
Hopefully you have SPI epoxy too .

http://spi.forumup.org/viewtopic.php?t=2613&mforum=spi

You can always call Barry @ SPI for the 411 on any of his products too.
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Old 04-23-2010, 06:47 AM
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I always stay away from the bondo ...W&G the metal....for spot repairs....For strip jobs I epoxy first then bondo....but still, I stay away from bondo when Using the W&G....If I do get some on the bondo I'll blow it dry with the air blower...You dont want that getting trapped under the epoxy.
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