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Old 09-28-2010, 08:32 AM
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How to apply Chromabase paint

I would like some instructions on how to apply Chromabase paint and Clear coat


For instance , do i wet sand chromabase applacation before i apply clear coat.


How many clear coats etc. [IMG]My 36 ford[/IMG]

Bob

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Old 09-28-2010, 06:02 PM
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No don't sand the basecoat before clear, unless there is a problem. And chromabase it is not advisable to sand any more then a light nib sanding (see the whole debate in this thread Interesting test on sanding base coat paint (against the data sheets recommendation) )
But do try to get the first coat of clear applyied within 24 hours (believe that the open window time on chromabase off the top of my head) for the time the last coat of base was applyed for proper chemical adhesion. Must be mixed in proper ratio of base and the proper basemaker (do not use another brand of reducer, chromabase you must use the correct stuff) and also adding the optional activator is advisable if you want the best durability.

Chromabase it is also adviseable to use the correct valueshade of primer for you particular paint code to do any repairs or to paint over. Your paint jobber who mixes you paint code should be able to tell you want is recommended. You apply the number of coats it takes to get proper coverage, doesn't have to be more nor should it be less.

Clears are not all equal and have different solids content, so 2 of one clear may equal 3 of another. But generally between 2 to 4 coats of clear. Many more then that and you paint job could have issues or chip easier, to little then there won't be enough mil thickness to protect the color and the clear to last. I usually go 3 with most, as it gives some room for wetsanding and buffing and still have enough mil thickness left afterwards for proper protection of the base.

Always read the tech sheets for your products before using and follow them. The information you want to know should be in them. Dupont has them available right online on their website or your paint jobber your getting your paint from should give them to you. One thing though I do not like that they often put in spray pressures for hvlp and list something like 10 lbs at the cap and it confuses people. Thats at the cap and really no way to measure that without special equiptment. Most hvlps guns still have a decent amount of pressure required at the inlet to spray properly, so find out more about your particular gun and recommended inlet pressure to spray properly.

http://pc.dupont.com/dpc/en/US/html/...romaBaseBC.pdf

http://pc.dupont.com/dpc/en/US/html/...omasystem.html

Last edited by kenseth17; 09-28-2010 at 06:09 PM.
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Old 09-28-2010, 06:16 PM
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How to apply Chromabase paint

Hi
Thank you for the info. All i have to paint is a set of fender skirts. I understand your instructions and will use them. Thanks again

Bob
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