VansAirForceForums  
Home > VansAirForceForums

-POSTING RULES
-Advertise in here!
- Today's Posts | Insert Pics

Keep VAF Going
Donate methods

Point your
camera app here
to donate fast.






VAF on Twitter:
@VansAirForceNet

  #1  
Old 02-02-2022, 12:38 PM
chaliboy chaliboy is offline
 
Join Date: Dec 2010
Location: Florida
Posts: 8
Default Prime or dimple first

Just Curious,

I have always prime painted prior to dimple. Working on the Empennage, will soon start the tail cone.

The manual seems to lean toward Dimpling first. As I get to the end of the tail kit, there seems to be less or weaker guidance on when to prime.

Any idea or suggestion. Haven't had any issues with painting first....
Reply With Quote
  #2  
Old 02-02-2022, 12:46 PM
Carl Froehlich's Avatar
Carl Froehlich Carl Froehlich is online now
 
Join Date: Dec 2007
Location: Dogwood Airpark (VA42)
Posts: 3,925
Default

I always fabricate, then prime. I put the parts in a pile until I have to start riveting things together to move on. That is when I prime.

Carl
Reply With Quote
  #3  
Old 02-02-2022, 01:11 PM
chaliboy chaliboy is offline
 
Join Date: Dec 2010
Location: Florida
Posts: 8
Default

Thank you Carl,

I got that wrong on my initial post. I meant to say that I Dimple first then prime.
Reply With Quote
  #4  
Old 02-02-2022, 01:23 PM
1001001's Avatar
1001001 1001001 is offline
 
Join Date: Dec 2014
Location: Just Minutes from KBVI!
Posts: 1,422
Default

I've done both.

It's way easier to prime first then dimple. But you have to use a good primer that won't come off when flexed. In my experience it does not work with self etching primer, but the Sherwin-Williams stuff I am using works great when applied before dimpling.
Reply With Quote
  #5  
Old 02-02-2022, 01:58 PM
gotyoke gotyoke is offline
 
Join Date: Jul 2020
Location: Placerville, CA
Posts: 160
Default

I've done both and haven't found much difference. May depend on the primer--I use SW P60G2. If you decide to dimple first and need to scuff to prep for primer, do it before dimpling.
__________________
RV-14A - N74LF reserved
Emp started 1/1/2022 - 65% done
Wings SB started 4/14/22 - 70% done
Fuse delivered 9/26/22
Finish ordered - crating Winter '23 (hopefully)
Reply With Quote
  #6  
Old 02-02-2022, 02:35 PM
skelrad skelrad is offline
 
Join Date: Mar 2005
Location: Redmond, WA
Posts: 355
Default

I used to deburr and dimple, then prime. I got tired of destroying my fingers while scuffing over dimples to prepare for primer though. Now I mostly clean/scuff first, then dimple, then prime. It just depends on the build order though. For example, in building the wings, I scuffed and primed ribs first so I could rivet them to the spar and match drill to skins, then I dimpled them in place. As long as the primer has had long enough to truly cure, I haven't seen an issue with dimpling causing primer problems.
__________________
Brandon
RV-9A: Fuselage in progress
Reply With Quote
  #7  
Old 08-13-2022, 05:34 PM
rynmss rynmss is offline
 
Join Date: Jan 2022
Location: Portland, OR
Posts: 17
Default

I'm having to switch up my technique. I was dimpling then priming, but learned I shouldn't be dimpling with the outer plastic on. I like to leave it on to mask for overspray. I'm really not interested in the whole trimming and peeling rivet lines technique—though if it is the only option would do it.

I'm hoping I can prime with the plastic on, peel, and dimple.

Wondering if there are drawbacks to this workflow...
Reply With Quote
  #8  
Old 08-13-2022, 05:54 PM
mfleming's Avatar
mfleming mfleming is offline
 
Join Date: Sep 2016
Location: Joseph, Oregon
Posts: 988
Default

Quote:
Originally Posted by rynmss View Post
I'm having to switch up my technique. I was dimpling then priming, but learned I shouldn't be dimpling with the outer plastic on. I like to leave it on to mask for overspray. I'm really not interested in the whole trimming and peeling rivet lines technique—though if it is the only option would do it.

I'm hoping I can prime with the plastic on, peel, and dimple.

Wondering if there are drawbacks to this workflow...
IMHO ditch the plastic unless you plan on polishing. I used a downdraft paint booth and didn't have any problem with overspray on the opposite side.

And for the record, I primed (SW wash primer), then dimpled.
__________________
Michael Fleming
Joseph, OR
sagriver at icloud dot com

RV-7 Slider #74572
Started 11/2016
Empennage completed 11/2016
Ailerons and flaps completed 3/2017.
Wings completed 12/2017
Started on QB fuselage 01/2018
Sliding canopy mostly completed 10/2020
Wiring and Avionics harness completed 9/2/2021
FWF Completed 11/1/2022
Final assembly Started 11/10/2022
Wings on 11/12/2022

N526RM

Donated for 2022 and so should you

Last edited by mfleming : 08-13-2022 at 09:48 PM.
Reply With Quote
  #9  
Old 08-13-2022, 07:00 PM
wirejock's Avatar
wirejock wirejock is online now
 
Join Date: Oct 2005
Location: Estes Park, CO
Posts: 5,697
Default Order of operations

Quote:
Originally Posted by gotyoke View Post
I've done both and haven't found much difference. May depend on the primer--I use SW P60G2. If you decide to dimple first and need to scuff to prep for primer, do it before dimpling.
That's the order I've always used. P60G2 as well
Fit
Scuff
Dimple
Wash
Prime
__________________
Larry Larson
Estes Park, CO
E-mail: wirejock at yahoo dot com
Builder Blog: http://wirejockrv7a.blogspot.com
Donated 12/01/2021, plus a little extra.
RV-7A #73391, N511RV reserved
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
Reply With Quote
  #10  
Old 08-13-2022, 10:30 PM
David Z David Z is offline
 
Join Date: Aug 2010
Location: Thunder Bay Ontario
Posts: 956
Default

A little bit of overspray will come right off when you prep for paint. Didn't know it was possible to dimple with the plastic still on.
__________________
RV8
Empennage Passed Pre-close Inspection
Wings mostly done
Fuselage assembly, it's a riveting job!
83126
Dash 8 day job is financing the RV8
Donation till September 2023
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 10:01 PM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.