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02-13-2018, 04:00 PM
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Join Date: Sep 2015
Location: England
Posts: 67
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Dimple or Prime
Hi,
I?m in the early stages of a build and always thought that you primed then dimpled, not sure where I got it from. But I?ve seen a few people doing the dimpling first followed by priming. Any views on what is right or best?
Cheers
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02-13-2018, 04:14 PM
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Join Date: Oct 2012
Location: Clearwater, FL KCLW
Posts: 1,281
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Priming was usually my last step before assembling any parts.
That being said, the parts that I primed prior to dimpling, or (gasp!) didn't prime at all, look just as good today as when I built it.
Chris
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Chris Johnson
RV-9A - Done(ish) 4/5/16! Flying 4/7/16
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02-13-2018, 04:35 PM
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Join Date: Dec 2011
Location: Alpharetta, Ga
Posts: 212
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Hi Mikeandmaz,
No right answer here. I typically prime then dimple. I find that prepping/scuffing,..and deburring after dimpling is a little more difficult, and harder on scorchbrite pads. I also have a personal unproven theory that I get a full dimple if I wait until after priming. I'm using akzo, and never had any issues with primer separation.
Have fun!
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02-13-2018, 04:50 PM
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Join Date: Oct 2015
Location: Indianapolis, IN
Posts: 254
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If you scratch it up while dimpling before you prime, the scratches will come out when you prep for priming. If you scratch it while dimpling AFTER you prime, you'll have to touch it up.
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Stu F.
RV8
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02-15-2018, 02:09 AM
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Join Date: Sep 2015
Location: England
Posts: 67
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Many thanks for the replies
Mike
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Empennage arrived
VS completed
Rudder completed
HS completed
Elevators completed
Quick Build wings, fuselage and finish kit deliverd
#140425
Donation paid 2019
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02-15-2018, 10:37 AM
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Join Date: Jan 2016
Location: Southwest
Posts: 1,119
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my take
I am priming with Sherwin Williams P60G and am priming before dimpling. if I let the primer cure 3 days before dimpling, I don't recall a scratch problem that I needed to touch up.
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John S
WARNING! Information presented in this post is my opinion. All users of info have sole responsibility for determining accuracy or suitability for their use.
Dues paid 2020, worth every penny
RV9A- Status:
Tail 98% done
Wings 98% done
Fuselage Kit 98% done
Finishing Kit 35% canopy done for now
Electrical 5% in work
Firewall Forward 5% in work
www.pilotjohnsrv9.blogspot.com
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02-15-2018, 10:56 AM
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Join Date: Jan 2015
Location: Kansas
Posts: 169
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Prime before dimple for me. I find it very time consuming to scuff after dimpling. Seems there's always a shinny "shadow" if I dimple fist. This shadow is probably OK, but I like to see a nice uniform gray color before I wipe down and prime.
IMO if your primer won't hold up to dimpling,you may not have adequate adhesion or perhaps may want to look at a different primer.
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Dues Paid for 2020
RV-14
Empennage Complete (including fiberglass)
Wings complete (including fiberglass)
Fuse joined and working on painting interior
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02-15-2018, 12:07 PM
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Join Date: Sep 2013
Location: Ooltewah, TN.
Posts: 580
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I'm in the "Prime before dimpling" camp here. I tried both ways. When I dimpled before priming, I had a hard time scuffing my parts with scotchbrite pads over the backs of the dimples. They would eat away at my pads and I'd burn through them quickly. Also, scuffing flanges with dimples was a pain in the rear.
SO, I switched over to priming before dimpling and, to me, it was SOOO much easier. I don't go through as many scotchbrite pads, and being able to scuff without having to worry about the backs of dimples made it much less of a chore.
Then when I dimple, the dimple die helps clear out any primer that's too thick in the hole for a rivet.
It's worked out great for me.
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Lynn Dixon
RV-7 Slider -
Tail kit Completed - March 2017
Wing Kit Started - June 2017
My Build Log: http://www.theskunkwerx.com
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02-15-2018, 12:45 PM
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Join Date: Jul 2005
Posts: 1,346
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Etch, chromate covert (Alodine) in the flat. (less wear on the abrasive pads)
Dimple.
Prime.
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Mike W
Venice, FL
RV-6A. Mattituck TMX O-360, FP, GRT Sport EFIS, L3 Lynx NGT-9000
N164WM
N184WM reserved (RV-8)....finishing kit in progress. Titan IOX-370
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02-15-2018, 02:00 PM
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Join Date: Sep 2015
Location: England
Posts: 67
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I?m kind of pleased the prime first camp is coming out on top, thanks again for the info.
__________________
Empennage arrived
VS completed
Rudder completed
HS completed
Elevators completed
Quick Build wings, fuselage and finish kit deliverd
#140425
Donation paid 2019
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