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  #1  
Old 03-21-2021, 03:30 PM
RV701775 RV701775 is offline
 
Join Date: Jul 2019
Location: Boston, MA
Posts: 70
Default Orange Peel Removal

I just primed my VS with AKZO and there are some small areas with orange peel that I would like to remove. What is best way to remove and respray small areas without leaving marks in the primer coat. Can the paint be blended somehow?
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  #2  
Old 03-21-2021, 03:59 PM
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wirejock wirejock is offline
 
Join Date: Oct 2005
Location: Estes Park, CO
Posts: 4,379
Default Cut & buff

Quote:
Originally Posted by RV701775 View Post
I just primed my VS with AKZO and there are some small areas with orange peel that I would like to remove. What is best way to remove and respray small areas without leaving marks in the primer coat. Can the paint be blended somehow?
Outside or inside?
Inside, leave it. Outside, depends. If your plane will be painted by a shop, don't spray anything unless you and the shop have agreed on products. If you plan to paint, I would still leave it for later and wet sand it before final prep.
If you really want to smooth it out, wet sand. Process is called Cut & Buff. Look for Dan Horton's thread or look at my blog for a link.
Basically you block wet sand starting about 800.
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Estes Park, CO
http://wirejockrv7a.blogspot.com
wirejock at yahoo dot com
Donated 01/01/2021, plus a little extra.
RV-7A #73391, N511RV reserved (2,000+ hours)
Empennage, wings, fuse, finishing kit, now FWF
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  #3  
Old 03-21-2021, 04:16 PM
RV701775 RV701775 is offline
 
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Location: Boston, MA
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Default Reply

It is on the spars of the VS. Not the outside of the skin. Some may be visible at a few locations, so I was going to try and sand it out and respray the small areas.
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  #4  
Old 03-21-2021, 05:00 PM
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wirejock wirejock is offline
 
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Location: Estes Park, CO
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Default Orange peel

Quote:
Originally Posted by RV701775 View Post
It is on the spars of the VS. Not the outside of the skin. Some may be visible at a few locations, so I was going to try and sand it out and respray the small areas.
We are cut from the same cloth. Visible or not, drives me nuts. I can't leave it even if no one will ever see it!
If it's not assembled, wet sand it. Start with 800. If it doesn't remove it fast, drop back to 400. Use a rubber block or wood block so it stays flat. Watch edges. They break through quickly.
If assembled, that's a tough choice because it's really tough to get it sanded flat.
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Larry Larson
Estes Park, CO
http://wirejockrv7a.blogspot.com
wirejock at yahoo dot com
Donated 01/01/2021, plus a little extra.
RV-7A #73391, N511RV reserved (2,000+ hours)
Empennage, wings, fuse, finishing kit, now FWF
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.
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  #5  
Old 03-21-2021, 06:10 PM
Mudfly Mudfly is offline
 
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Location: Alpharetta, Ga
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Default

Smooth out orange peel with scotchbrite pad. Try and do before primer cures. Maybe after and hour or so.
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  #6  
Old 03-22-2021, 06:52 AM
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DanH DanH is offline
 
Join Date: Oct 2005
Location: 08A
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Default

Quote:
Originally Posted by RV701775 View Post
It is on the spars of the VS. Not the outside of the skin. Some may be visible at a few locations, so I was going to try and sand it out and respray the small areas.
Nope.

In general, during construction you only want to primer (if you primer) those parts which will not subsequently get a color coat...mostly hidden stuff and between parts.

Why? Most of the epoxy primers must be recoated (the color coat) within a time window, typically a few days and less than a week. If not topcoated within the window, they will need to be sanded and resprayed with fresh primer.

So, it is pointless to worry about primer orange peel on visible parts at this time, and certainty pointless to respray them now. Keep building, and spend the spare time experimenting with scrap and a little slower reducer
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Last edited by DanH : 03-22-2021 at 09:32 AM.
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  #7  
Old 03-22-2021, 09:02 AM
lr172 lr172 is offline
 
Join Date: Oct 2013
Location: Schaumburg, IL
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Default

Quote:
Originally Posted by Mudfly View Post
Smooth out orange peel with scotchbrite pad. Try and do before primer cures. Maybe after and hour or so.
Agree with Dans comments, but wanted to note that this approach is a really bad idea for any exterior surface that will be top coated with a gloss. This work must be done with sandpaper and some form of block. otherwise once the clear coat or single stage is on it will be wave city.

Larry
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Last edited by lr172 : 03-22-2021 at 09:05 AM.
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