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  #11  
Old 05-25-2014, 05:27 PM
JDA_BTR JDA_BTR is offline
 
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Location: Baton Rouge, LA
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I found the best price for the AKZO at Graco?. $144.21 plus shipping
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  #12  
Old 05-25-2014, 07:03 PM
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RV7AJeremy RV7AJeremy is offline
 
Join Date: Aug 2010
Location: Gilbert AZ
Posts: 414
Default Regret

For others out there starting out, I used rattle can for my entire project, it is my biggest regret. AKZO looks WAY better, is way tougher and the price in the end was probably about the same or more for the rattle can. It's not hard to use, don't be intimidated like I was at using a spray gun. Go for it.
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  #13  
Old 05-27-2014, 08:49 AM
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Husker'87 Husker'87 is offline
 
Join Date: Jul 2013
Location: Lucas, TX
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Default

Quote:
Originally Posted by JDA_BTR View Post
I found the best price for the AKZO at Graco?. $144.21 plus shipping
Is this the kit you're talking about?

http://www.gracosupply.com/p-60209-a...-1-comp-a.aspx
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  #14  
Old 05-27-2014, 06:56 PM
MElstien MElstien is offline
 
Join Date: Jan 2013
Location: Kinnelon NJ
Posts: 164
Default My turn at trying to prime using AKZO

Hello,

I also bought my AKZO from Graco. Great service. They also sell 2 oz touch-up kits for $4.00. I bought the gallon and the touch-up kit.

Today I decided to try priming. I know I need help on this so please provide any support or advice. Please follow the link to my web page and full resolution photos.

http://elstien.us/RV-10%20Build%20Lo...ing/index.html

I used a HF HVLP gun with 40 PSI at the gun static pressure (no trigger pull) I experimented with different fluid flows and spray patterns but not with pressure. I am happy that I did not create a mess but I am not happy with the results.

Do not worry about the order of the work, I know I did some riveting before priming etc.
I mixed 1:1 and let sit for 30 minutes
I mixed only 1/2 of the touch-up kit.
Poured 1/2 into gun, maybe 1 Oz
Covered all parts.
My friend thought the coverage was not enough so I added the remaining and sprayed one skin of the practice kit heavier, almost a cover coat.
All the parts feel fuzzy, maybe because of too high a pressure on the gun?

Please let me know some ideas and I will try some additional pieces.
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Builders Blog http://elstien.us/wordpress/
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Tail Kit delivered 6-2013
Finished QB wings on September 2018
Moved to Port Orange Florida November 2018
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Finished Fuselage April / May 2020
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  #15  
Old 05-27-2014, 07:16 PM
60av8tor 60av8tor is offline
 
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Location: Harrisburg, Pa
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Hi Michael,

Really hard to tell with the pics and without seeing the parts, but I had a few parts with the same thing - almost looked like a bunch of dirt/dust contamination; also felt rough. I believe it was a case of too much air drying some of the primer as it was being shot. I adjusted the airflow and all was well.
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  #16  
Old 05-27-2014, 07:48 PM
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wirejock wirejock is offline
 
Join Date: Oct 2005
Location: Estes Park, CO
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Default Grainy

Quote:
Originally Posted by 60av8tor View Post
Hi Michael,

Really hard to tell with the pics and without seeing the parts, but I had a few parts with the same thing - almost looked like a bunch of dirt/dust contamination; also felt rough. I believe it was a case of too much air drying some of the primer as it was being shot. I adjusted the airflow and all was well.
I agree. I got a grainy finish with the P60G2 the first few parts. It turned out to be paint was not atomized. Adjustment to slightly less paint and a tad more pressure made a smooth finish.
a light scrub of parts with 400 smoothed out the grainy finish.
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  #17  
Old 05-28-2014, 05:31 PM
JDA_BTR JDA_BTR is offline
 
Join Date: Dec 2013
Location: Baton Rouge, LA
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What do ya'll do to mix the primer/catalyst once in the PPS cup? It won't fit in the shaker and I can't find the little collar that would do that anywhere (it is in the 3M video demonstrating the cups). Hand shake? Stir?

Also, the priming pistol worked but was inconsistent. I have gotten a Vaper 19000 and I don't know how to use/adjust it - the instructions are useless. It looks like there is a knob on the back and another on the side?. Googling it...
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  #18  
Old 05-28-2014, 06:06 PM
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scard scard is offline
 
Join Date: Jun 2005
Location: Cedar Park, TX
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Default

Quote:
Originally Posted by JDA_BTR View Post
What do ya'll do to mix the primer/catalyst once in the PPS cup? It won't fit in the shaker and I can't find the little collar that would do that anywhere (it is in the 3M video demonstrating the cups). Hand shake? Stir?
I'm not sure I even understand the question. You're mixing up one little cup of stuff at a time... Thoroughly mix the solids in the gallon can. Transfer correctly measured amounts to the PPS, stir with a tongue depressor. Wait the induction time. Give it a jiggle as you are putting it on the gun to spray, and go for it.
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  #19  
Old 05-28-2014, 06:32 PM
JDA_BTR JDA_BTR is offline
 
Join Date: Dec 2013
Location: Baton Rouge, LA
Posts: 1,055
Default

That was my question - after combining the two parts how much more mixing of that is needed. It didn't seem like it should need much.
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  #20  
Old 05-28-2014, 06:33 PM
MElstien MElstien is offline
 
Join Date: Jan 2013
Location: Kinnelon NJ
Posts: 164
Default Better the second time around

Thank you everyone for your advice. Tonight I loaded up a batch of AKZO, probably around -1 oz. what was left from the touch up kit. I lowered the pressure to the gun to 36 PSI static pressure and adjusted the air knob (near the air hose attach point) all the way in at first. I also turned the material knob (the one that controls the needle) all the way in.

  • I tried to spray, nothing came out. As I expected.
  • I then undid the air knob 1 turn and pressed the trigger, air but no material, as expected. The pressure drop from static to trigger pull was a delta of 8-10 PSI
  • Next I undid the material knob 1/2 turn and pressed the trigger and got some material to flow, but it was not "wetting" the aluminum.
  • I undid the material knob another 1/2 turn and pressed the trigger.
  • Viola- it looks a lot better.
  • It went on wet, covered well and no fuzzy stuff.

I am out of touch-up material and need to crack open the gallon containers. The next time I spray it will be on the VS spar and I fully expect to fine tune the adjustments, air, fan and material just right.

One step closer to starting the real build

Thanks everyone.
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RV-10 Builder
Tail Kit delivered 6-2013
Finished QB wings on September 2018
Moved to Port Orange Florida November 2018
Tailcone mounted to Fuselage on 3-1-2020
Finished Fuselage April / May 2020
Working working working on Doors
Engine Ordered (BPA/Fly-EFII 8/1/2020
Dues Paid through 2020
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