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JHearnsberger

Joined: 22 Dec 2009
Posts: 31
Location: Springhill, LA

Posted: Thu Jan 07, 2010 11:57 am Post subject: Can I use this?

Can I use rust-oleum automotive primer? I understand that everyone has opinions and primer preferences. I just want to know if this will do the job and hold up.

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deej(at)deej.net
Guest

Posted: Thu Jan 07, 2010 12:27 pm Post subject: Can I use this?

On 01/07/2010 02:57 PM, JHearnsberger wrote:

 	  Quote: 	
		   

 

 Can I use rust-oleum automotive primer? I understand that everyone has opinions and primer preferences. I just want to know if this will do the job and hold up.

 


	




	I'm using an automotive primer, which might be similar to what you are

asking about.  So far, so good.  I have 4+ year old parts with it on it

and it seems to be holding up okay.  Still building, though.  I've found

that you need to let it sit at least a couple of days to let it harden

enough to work with the pieces after priming, otherwise it can scratch

easily.  Of course, it is just as easy to put a squirt over it once

you've done to cover up any marks you might have made on it while

riveting, etc.

	You can get it from two sources (same product, branded two ways):



<http://www.sherwin-automotive.com/products/show_product.cfm?product=988>



<http://www.napaonline.com/Search/Detail.aspx?R=MSR7220_0006419503>



fyi



-Dj



-- 

Dj Merrill - N1JOV

Glastar Sportsman 2+2 Builder #7118 N421DJ - http://deej.net/sportsman/

Grumman Yankee Driver N9870L - http://deej.net/yankee/

Phil.Perry(at)netapp.com
Guest

Posted: Thu Jan 07, 2010 12:36 pm Post subject: Can I use this?

I'm using it only with Alodine underneath.  The product doesn't have any

chromates to prevent corrosion, so it basically serves as an barrier

between metal surfaces and moisture/air.  I'd like to treat the aluminum

with a preventative chemical, so that's the reason I alodine underneath.



Generally speaking though, I'm using a higher-end primer (Dupont

Variprime).  I only use the Alodine/Rust-oleum combo on pieces that are

too small to justify a batch of Variprime and the effort to clean

everything up.



Phil



--

Phil.Perry(at)netapp.com
Guest

Posted: Thu Jan 07, 2010 12:54 pm Post subject: Can I use this?

Hey DJ..



Try sitting the pieces in front of a space heater.  No need to get them

hot, just warm for a while.



It'll setup quickly and be hard as nails.  Then you can build on.





--

carl.froehlich(at)verizon
Guest

Posted: Thu Jan 07, 2010 1:01 pm Post subject: Can I use this?

Any primer is better than no primer, but I think you will be disappointed

with a non-sealing primer like the one you suggest.



Considering the prep is the same, and is the majority of the work, why not

use something worthwhile?  A quality epoxy primer like PPG DP40LF is

exceptionally durable and easy for the amateur painter.  It is widely

available at automotive paint suppliers.



Carl Froehlich

RV-8A (525 hrs)

RV-10 (systems)



--

deej(at)deej.net
Guest

Posted: Thu Jan 07, 2010 1:15 pm Post subject: Can I use this?

On 01/07/2010 03:47 PM, Perry, Phil wrote:



 	  Quote: 	
		   Try sitting the pieces in front of a space heater.  No need to get them

 hot, just warm for a while.


	


	Thanks!  Nice tip.



	I don't yet have heat in my shop, but I'm almost finished with

installing a propane heating system.  It is mounted, vented, and wired,

and now I just need to get the propane company out to install the

propane lines and tank, and then check everything.  Hopefully soon!  It

gets slightly chilly here in Maine this time of year...  



-Dj



-- 

Dj Merrill - N1JOV

Glastar Sportsman 2+2 Builder #7118 N421DJ - http://deej.net/sportsman/

Grumman Yankee Driver N9870L - http://deej.net/yankee/

jcumins(at)jcis.net
Guest

Posted: Thu Jan 07, 2010 1:15 pm Post subject: Can I use this?

You want to use a acid etching primer unless you want to acid etch first

them alodine then prime.  Napa has a Acid Etching primer that is in rattle

can and works well.  There are numerous ones on the market I went with the

Napa one and it works just fine.



John G. Cumins

40864

Emp in priming mode and yes I won the primer war 

--

partner14

Joined: 12 Jan 2008
Posts: 540
Location: Granbury Texas

Posted: Thu Jan 07, 2010 1:40 pm Post subject: Can I use this?

Bottom line:  Don't sweat it, almost anything is better than nothing... and if you keep the plane inside the vast majority of the time,,,, nothing is just fine.  Unless, of course, you want your son to be able to give the plane to his son.

 Don McDonald



--- On Thu, 1/7/10, Perry, Phil <Phil.Perry(at)netapp.com> wrote:



 [quote]

From: Perry, Phil <Phil.Perry(at)netapp.com>

Subject: RE: Can I use this?

To: rv10-list(at)matronics.com

Date: Thursday, January 7, 2010, 12:47 PM



 --> RV10-List message posted by: "Perry, Phil" <Phil.Perry(at)netapp.com (Phil.Perry(at)netapp.com)>



Hey DJ..



Try sitting the pieces in front of a space heater.  No need to get them

hot, just warm for a while.



It'll setup quickly and be hard as nails.  Then you can build on.





--

_________________
Don A. McDonald
40636

Phil.Perry(at)netapp.com
Guest

Posted: Thu Jan 07, 2010 8:03 pm Post subject: Can I use this?

Cold in Maine??     

   

Check out tomorrow’s Houston forecast compared to Base Orcadas, Antarctica.  J  

   

   

[img]cid:image005.jpg(at)01CA8FB7.2494A930[/img]  

   

   

[img]cid:image006.jpg(at)01CA8FB7.2494A930[/img]  

   

   

   

========================  

   

      I don't yet have heat in my shop, but I'm almost finished with  

installing a propane heating system.  It is mounted, vented, and wired,  

and now I just need to get the propane company out to install the  

propane lines and tank, and then check everything.  Hopefully soon!  It  

gets slightly chilly here in Maine this time of year...    

   

-Dj

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Bob Turner

Joined: 03 Jan 2009
Posts: 885
Location: Castro Valley, CA

Posted: Thu Jan 07, 2010 9:52 pm Post subject: Re: Can I use this?

Of course, it's mid-summer in Antarctica. What was Houston like on July 7th?

_________________
Bob Turner
RV-10 QB

Phil.Perry(at)netapp.com
Guest

Posted: Thu Jan 07, 2010 10:07 pm Post subject: Can I use this?

Lol, yeah. That's what I was telling them at work. It still pretty damn funny though.

 

 

 

 

 ---

JHearnsberger

Joined: 22 Dec 2009
Posts: 31
Location: Springhill, LA

Posted: Fri Jan 08, 2010 6:23 am Post subject: Re: Can I use this?

 	  Quote: 	
		  You want to use a acid etching primer unless you want to acid etch first 

them alodine then prime. Napa has a Acid Etching primer that is in rattle 

can and works well. There are numerous ones on the market I went with the 

Napa one and it works just fine. 



John G. Cumins 	




Do you not have to use alodine if you go the acid etching primer route?

tsts4

Joined: 06 Aug 2007
Posts: 167
Location: Tampa, FL

Posted: Fri Jan 08, 2010 6:33 am Post subject: Re: Can I use this?

No, but understand what each chemical does.  Acid etching's purpose is to roughen (and to lessor degree clean) the surface to provide better mechanical adhesion of the primer.  Alodine is a conversion coating that provides corrosion protection by replacing the oxide layer (ie the ALCLAD layer) that typically gets removed either by scratches and/or dings or through the prepping process for priming.

_________________
Todd Stovall
aka "Auburntsts" on EAA and VAF
RV-10 N728TT -- Flying

JHearnsberger

Joined: 22 Dec 2009
Posts: 31
Location: Springhill, LA

Posted: Fri Jan 08, 2010 6:54 am Post subject: Re: Can I use this?

What does Alumiprep do? Is this necessary?

pietflyr(at)bellsouth.net
Guest

Posted: Fri Jan 08, 2010 7:31 am Post subject: Can I use this?

Alumiprep is a phosphoric acid etch.  It works best if the parts are cleaned

with a good dishwashing soap and water first, rinsed, then dipped in

Alumiprep for about 3 minutes, then rinsed with cold water.  The etched

surface should be primed or alodined within 8 hours.



Jack Phillips

#40610 - Wings

Raleigh, NC

--

johngoodman

Joined: 18 Sep 2006
Posts: 530
Location: GA

Posted: Fri Jan 08, 2010 7:34 am Post subject: Re: Can I use this?

If it contains chromates or MEK, you don't want it anywhere near your skin, eyes, or nose.

John

_________________
#40572 Phase One complete in 2011

JHearnsberger

Joined: 22 Dec 2009
Posts: 31
Location: Springhill, LA

Posted: Fri Jan 08, 2010 7:48 am Post subject: Re: Can I use this?

Ok, I give up. I will do it right. I was looking for the easy way out. 



Tell me what all to order. Alumiprep, Alodine, paint sprayer, etc....  



Just not the most expensive products. I don't want to break the bank.

carl.froehlich(at)verizon
Guest

Posted: Fri Jan 08, 2010 7:52 am Post subject: Can I use this?

I use a Alumiprep (PPG product) to clean aluminum parts prior to priming. 



This is about as easy as it gets.  Mix the Alumiprep about 4 to 1 with

water, use a red Scotch Brite pad with the Alumiprep on the parts to clean

them, rinse with water, let dry then prime with a good sealing epoxy primer

like PPG DP40LF.  The first parts I primed on my 8A are now 11 years old and

still look the same as the day I primed them.



Carl Froehlich

RV-8A (525 hrs)

RV-10 (systems install)



--

johngoodman

Joined: 18 Sep 2006
Posts: 530
Location: GA

Posted: Fri Jan 08, 2010 7:57 am Post subject: Re: Can I use this?

I'm leaving most of the aluminum in shiny Alclad, because I plan on using Corrosion-X once it's painted & flying. However, there are always worked over pieces that need some primer. I use a rattle can of Napa 7220, which is one of many brands of self-etching primer out there. It contains MEK, so I wear long sleeve shirts, nitrile gloves, and a real respirator with ventless goggles.

John

_________________
#40572 Phase One complete in 2011

deej(at)deej.net
Guest

Posted: Fri Jan 08, 2010 8:10 am Post subject: Can I use this?

On 01/08/2010 10:48 AM, JHearnsberger wrote:

 	  Quote: 	
		   

 

 Ok, I give up. I will do it right. I was looking for the easy way out. 


	




	There really isn't one "right" answer.  All I do is clean the part with

Denatured Alcohol using an old toothbrush, wipe it down with a rag and

let it dry, and then spray it from the can of Sherwin Williams 988 (also

Napa 7220) self etching primer.  This works well for me, and the primer

is still adhering well to parts that I applied it to over 4 years ago.

This was the "easiest" method of priming for me, but the other methods

work well too, and you might find one of them even easier.



	Short answer, it doesn't matter what you put on, just put something on

and you'll be fine.



-Dj



-- 

Dj Merrill - N1JOV

Glastar Sportsman 2+2 Builder #7118 N421DJ - http://deej.net/sportsman/

Grumman Yankee Driver N9870L - http://deej.net/yankee/

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