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primer segestions

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jcumins(at)jcis.net
Guest

Posted: Mon Jul 07, 2008 2:50 pm Post subject: primer segestions

I am looking to find a very easy to spray and manage primer.  I do not want to acid etch and Aldine then prime.  So I am looking for a simple primer that I can spray right on to a scuffed part with reasonable protection.  I am in northern California so no real wet environment at all.  Plus I have a have to park it in.  

   

What would you builders recommend.  

   

Thanks  

   

John  

   

40864   

   

        [quote][b]

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Kelly McMullen

Joined: 16 Apr 2008
Posts: 1188
Location: Sun Lakes AZ

Posted: Mon Jul 07, 2008 3:08 pm Post subject: primer segestions

NAPA #7220 Self Etching Primer (listed at NAPA in their

Martin Senour catalog).

If rattle can primer satisfies you. Not as robust as the 2 part

epoxies. Depends on exposure in your area and how long you intend to

worry about the condition of the plane. I'll be very lucky if I get to

fly mine 20 years.



On Mon, Jul 7, 2008 at 3:46 PM, John Cumins <jcumins(at)jcis.net> wrote:

 	  Quote: 	
		   I am looking to find a very easy to spray and manage primer.  I do not want

 to acid etch and Aldine then prime.  So I am looking for a simple primer

 that I can spray right on to a scuffed part with reasonable protection.  I

 am in northern California so no real wet environment at all.  Plus I have a

 have to park it in.



 What would you builders recommend.



 Thanks



 John



 40864

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_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor
KCHD

flywrights(at)yahoo.com
Guest

Posted: Mon Jul 07, 2008 4:07 pm Post subject: primer segestions

John, 

  

Be very careful; we all love what we each did, whether it was 10-part fingerpaint with a Reynolds' Wrap seal or "nothin' but bare 'lumium with an elbow-grease shine;" this can be a very touchy subject.  BUT since you asked about a simple one-step method --  

  

Most folks going with the rattle-can self-etching method have used either Kelly's suggestion of Napa #7220 or Sherwin Williams SW988 found at industrial paint stores, NOT the home SW Paint store.  I believe these two primers are actually very similar, with the Napa being a different color and a little cheaper per can. 

  

I lucked out one time so far and got a case (12 cans) of SW988 from an unsuspecting salesman, from whom I requested a bulk discount and got them for around $5 a can, as opposed to 9-12. 

  

Scuff with Scotchbrite pad, clean with acetone or denatured alcohol (these are "safer" for your skin than MEK), allow it to flash off and then spray.  Your application doesn't even have to be perfectly smooth.  Remember, you're priming, not painting.  This way you know you're not obsessed with perfect primer coats, but you'll get better and more efficient as you go, and your jobs will look better by default. 

  

Rob Wright 

#392 

Struggling through window glue-in 



 

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pascal(at)rv10builder.net
Guest

Posted: Mon Jul 07, 2008 4:21 pm Post subject: primer segestions

Being your in California forget Sher Win  DTM  wash primer, it was a great product for me but banned in this state. I hear from  my rep that there is a great 1 part acrylic but I haven't tested it  yet.

 http://www.sherwin-williams.com/pdf/products/pro_industrial_0voc_acrylic.pdf

  



  From: John Cumins (jcumins(at)jcis.net) 

 Sent: Monday, July 07, 2008 3:46 PM

 To: rv10-list(at)matronics.com (rv10-list(at)matronics.com) 

 Subject: primer segestions

 



  

I am looking to find a very easy to  spray and manage primer.  I do not want to acid etch and Aldine then  prime.  So I am looking for a simple primer that I can spray right on to a  scuffed part with reasonable protection.  I am in northern California so no real wet  environment at all.  Plus I have a have to park it  in. 

  

What would you builders  recommend. 

  

Thanks 

  

John 

  

40864  

 

[quote]



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[b]

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deej(at)deej.net
Guest

Posted: Mon Jul 07, 2008 4:24 pm Post subject: primer segestions

John Cumins wrote:

 	  Quote: 	
		   I am looking to find a very easy to spray and manage primer.  I do not 

 want to acid etch and Aldine then prime.  So I am looking for a simple 

 primer that I can spray right on to a scuffed part with reasonable 

 protection.  


	


	Sherwin Williams 988 self etching primer in a spray can:



<http://www.sherwin-automotive.com/products/show_product.cfm?product=7565>



-Dj



-- 

Dj Merrill

Sportsman 2+2 Builder #7118

http://deej.net/sportsman/



"Many things that are unexplainable happen during the construction of an

airplane."  --Dave Prizio, 30 Aug 2005

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Bldgrv10450(at)comcast.ne
Guest

Posted: Mon Jul 07, 2008 4:36 pm Post subject: primer segestions

John

  

 I have had great results with SEM primer. I studied  primer a bunch until I landed on Randy Lervold's site and took his  advice: http://www.romeolima.com/RV3works/Airframe/airframe.html#Primer Randy  is our EAA Chapter 105 president. I use the spray cans with a clip on spray  handle for convenience. Cost is a bit more then quarts but, easy  clean-up and pro finish. I do not scuff with scotchbright choosing instead  to preserve that layer of added factory protection, I just wipe my parts with  lacquer thinner and shoot them. Last thing, I prime each part before  assembly adding the layer of protection where is is needed most in the  future.

  

 I know there are at least 20 guys that are reading  this and thinking wrong, wrong, wrong.

  

 Best Wishes, good priming,

  

 Paul Grimstad

 RV10  450   rudder  pedals

 [quote]   ---

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ricksked(at)embarqmail.co
Guest

Posted: Mon Jul 07, 2008 5:04 pm Post subject: primer segestions

Sherwin Williams 988 Self etching primer, buy two cases, spray cans,...give it a few days to heal....all but my tailcone was done with it..works great...first primer war in a year, shot fired in anger!!!! DUCK!!!! 

Rick Sked... 

40185...is it really this close to being flyable???  

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Tim Olson

Joined: 25 Jan 2007
Posts: 2872

Posted: Mon Jul 07, 2008 6:13 pm Post subject: primer segestions

You can still use Akzo primer...just scuff, degrease, and spray.

Should still be pretty tough, and it's a 2 part sealing primer.



Tim Olson - RV-10 N104CD - Flying

do not archive

John Cumins wrote:

 	  Quote: 	
		   I am looking to find a very easy to spray and manage primer.  I do not 

 want to acid etch and Aldine then prime.  So I am looking for a simple 

 primer that I can spray right on to a scuffed part with reasonable 

 protection.  I am in northern California so no real wet environment at 

 all.  Plus I have a have to park it in.

 

  

 

 What would you builders recommend.

 

  

 

 Thanks

 

  

 

 John

 

  

 

 40864

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