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  #11  
Old 10-27-2017, 03:44 PM
greghughespdx greghughespdx is offline
 
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Originally Posted by lr172 View Post
Single-stage is really just clear coat with pigment mixed in therefore it has a strong grip with no weak link. However, only a small amount of pigment-free clear ends up at the top and you need to be cautious on cut and buff. Some paints, like what i used, use Polyurethane pigments and you can cut/buff into the pigments without impacting the shine.
Admitted total paint noob here, so I will just ask: Is there a "single-stage" (combined pigment+clear as you described) that you can apply additional clear coat on? Probably a stupid question, but wondering if there's some sort of available hybrid approach.
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  #12  
Old 10-27-2017, 04:10 PM
Bavafa Bavafa is offline
 
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Originally Posted by greghughespdx View Post
Admitted total paint noob here, so I will just ask: Is there a "single-stage" (combined pigment+clear as you described) that you can apply additional clear coat on? Probably a stupid question, but wondering if there's some sort of available hybrid approach.
Greg,
If you go thru that link in the first post, they do talk about a single stage and clear (pigment+clear) and the pros and cons.
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  #13  
Old 10-27-2017, 04:13 PM
SR2500 SR2500 is offline
 
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Default PPG Availability

Problem with PPG is availability. Ordering from PPG is onerous. At Oshkosh, the rep directed me to Randy at Cooper Color in Arnold, MO. He caters to the corporate market and fills many of the general aviation orders. He can ship within 24 hours. I live near enough I simply drove down and met with him. He can mix any color you want.
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  #14  
Old 10-27-2017, 04:23 PM
lr172 lr172 is offline
 
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Originally Posted by Bavafa View Post
Excellent and easy to understand explanation, thank you Larry.
Perhaps one last question, with painting a RV in mind, an epoxy primer is required or a poly primer surfacer will be good for adhesion and rust protection?
I recommend the epoxy primer due to their good adhesion and corrossion protection. While epoxy primers are best, any two stage primer that is promoted as a base primer, providing sealing and preventing corrossion should be fine. Primers designed for sanding should not be used as a base primer, as they are not designed for protecting the base metal.

Most paint systems will have a base primer and sandable primers for levelling and scratch hiding. Don't skip the base primer.

Larry
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  #15  
Old 10-27-2017, 04:32 PM
lr172 lr172 is offline
 
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Originally Posted by greghughespdx View Post
Admitted total paint noob here, so I will just ask: Is there a "single-stage" (combined pigment+clear as you described) that you can apply additional clear coat on? Probably a stupid question, but wondering if there's some sort of available hybrid approach.
Yes, you can apply clear coat over single-stage. Talk to your paint rep about applying it though. They may want it to go on before the SS fully kicks off or after curing for a few hours. When using different chemistries, you typically want to apply after a few hours.

I used an unfamiliar paint for my white and had problems with the texture. I shot two coats of clear over it and block sanded it back down.

As I mentioned PU clear will stick to anything, even without cross-linking, though cross-linking is preferred.

Larry
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Last edited by lr172 : 10-27-2017 at 04:35 PM.
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  #16  
Old 10-27-2017, 04:34 PM
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uk_figs uk_figs is offline
 
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Default PPG paint availability

May be different across the country (and I guess the particular type of PPG paint) but I used the PPG DCC concept series which includes self etching primers, accelerators etc and it was all available from a local auto paint supplier (English Color & Supply).

I also painted my plane in a metal hangar in the dead of winter and the paint supply store was very helpful in figuring out the right mix of accelerator to flash off based on the temperature I was able to maintain the hangar at during painting:
DCC Concept info http://www.myrv10.com/N104CD/paint/p-168.pdf

I will say however that the painting was not an easy job (at least for me )

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  #17  
Old 10-27-2017, 05:12 PM
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DanH DanH is offline
 
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Problem with PPG is availability.
Ordinary PPG Deltron is readily available in the auto body market, and it's tough.

Try this page:

http://us.ppgrefinish.com/PPG-Refini...shLocator.aspx

Product page:

http://us.ppgrefinish.com/PPG-Refini...finish/Deltron

DPLF primer, K36 for blocking over glasswork, DBC base, DCU2021 clear.

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Last edited by DanH : 10-27-2017 at 05:15 PM.
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