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Painting Flat White Over A White Plastic Kit?

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  • Member since
    April 2008
Painting Flat White Over A White Plastic Kit?
Posted by Kizzy on Wednesday, March 24, 2010 1:18 AM

Hello,

I am building the Revell 1/144 Saturn V Rocket, which is molded in two colors, white and gray.  The instructions call for nearly all of the white polystyrene parts to be painted flat white.  For this purpose, I am using Tamiya XF-2 Flat White with my Paasche airbrush.  Trouble is, I'm having difficulty telling when I've got sufficient coverage with the white paint, because the paint color is so similar to the color of the molded plastic, that when I'm laying it down it hardly looks like anything is happening.

So far the best method I've come up with is to, as I'm spraying, periodically hold the part up to the light in my spray booth and see if there is a reflection.  The non-painted surface has a slight sheen to it, where the sections that have been painted with the flat white of course do not have much reflection at all.  So I just kind of keep laying on light coats until the sheen disappears.  This is working OK, but I'm wondering if there are any other tricks to this, for example to help make sure I'm not overpainting some sections, and underpainting others?  I suppose I could lay down a primer coat first (in gray, for example), but I'm getting good adhesion laying down the paint directly to the plastic, so I'd prefer to avoid that step.

How do you guys deal with this situation?

  • Member since
    July 2004
  • From: Sonora Desert
Posted by stikpusher on Wednesday, March 24, 2010 1:20 AM

If there are decals to be applied, you may want to put on a gloss white top coat. The shine will certainly tell you if your coverage is good or not.

 

F is for FIRE, That burns down the whole town!

U is for URANIUM... BOMBS!

N is for NO SURVIVORS...

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  • Member since
    October 2007
  • From: Scotland
Posted by Milairjunkie on Wednesday, March 24, 2010 4:18 AM

I had a similar issue a while ago with the 1/48 TSR.2, white kit with all white finish. I would say you have answered your question yourself - light, get an additional light source so that you can see your coverage as you spray.

You will most likley need a few coats to get good coverage, put enough coats down so it looks good & then ad another for good measure.

  • Member since
    June 2008
  • From: Iowa
Posted by Hans von Hammer on Wednesday, March 24, 2010 6:25 AM

I just use a rattle-can of gloss white enamel to begin with, rather than airbrush any flat white... Gotta have a gloss surface anyway (and if it's in a rattle-can, I'll use it to avoid cleaning an airbrush), and gloss white, at least the brand I use, is a shade "whiter" than the white plastic (car kit white) is and fairly easy to see... 

  • Member since
    November 2005
Posted by Anonymous on Wednesday, March 24, 2010 6:31 AM

I would have primed it in a light flat grey, then applied the white...

  • Member since
    May 2009
  • From: Hobart, Tasmania
Posted by Konigwolf13 on Wednesday, March 24, 2010 6:58 AM

Ditto

  • Member since
    July 2004
  • From: Northern KY
Posted by mucker on Wednesday, March 24, 2010 7:09 AM

Manstein's revenge

I would have primed it in a light flat grey, then applied the white...

I'm with Manny on this one. Did you have any seam repair? If so, unless you used a white putty you will get "read through" on the non-whote areas. I like to use Mr. Surfacer (light gray) as a primer, and it works great as a base for white. They even make a Mr. SUrfacer 1200 in white.

Of course you could go with the light gray or white primer of your choice...

  • Member since
    July 2004
  • From: Northern KY
Posted by mucker on Wednesday, March 24, 2010 7:09 AM

Manstein's revenge

I would have primed it in a light flat grey, then applied the white...

I'm with Manny on this one. Did you have any seam repair? If so, unless you used a white putty you will get "read through" on the non-white areas. I like to use Mr. Surfacer (light gray) as a primer, and it works great as a base for white. They even make a Mr. SUrfacer 1200 in white.

Of course you could go with the light gray or white primer of your choice...

  • Member since
    July 2004
  • From: Northern KY
Posted by mucker on Wednesday, March 24, 2010 7:09 AM

Manstein's revenge

I would have primed it in a light flat grey, then applied the white...

I'm with Manny on this one. Did you have any seam repair? If so, unless you used a white putty you will get "read through" on the non-white areas. I like to use Mr. Surfacer (light gray) as a primer, and it works great as a base for white. They even make a Mr. SUrfacer 1200 in white.

Of course you could go with the light gray or white primer of your choice...

  • Member since
    August 2006
  • From: Neenah, WI
Posted by HawkeyeHobbies on Wednesday, March 24, 2010 8:19 AM

I would have either used the light grey or NMF as a primer to spot imperfections.

Gerald "Hawkeye" Voigt

http://hawkeyes-squawkbox.com/

 

 

"Its not the workbench that makes the model, it is the modeler at the workbench."

  • Member since
    May 2005
  • From: Left forever
Posted by Bgrigg on Wednesday, March 24, 2010 8:31 AM

I agree with the people who say to prime first, though I would have used Tamiya AS-12 Bare Metal Silver. The silver gives the white a boost by increasing it reflective quality.

So long folks!

  • Member since
    January 2003
  • From: Peoples Socialist Democratic Republic of Illinois
Posted by Triarius on Wednesday, March 24, 2010 10:01 AM

I agree with Gerald and Bill (Bgrigg). But another technique for applying low contrast colors (especially clears) is to use raking illumination. Set up a light so that it is shining at a near 90° angle to the spray. Then you can see exactly where the paint is hitting the surface.

Ross Martinek A little strangeness, now and then, is a good thing… Wink

  • Member since
    April 2008
Posted by Kizzy on Wednesday, March 24, 2010 10:46 PM

Good suggestions all.  At this point, I think perhaps simply shining a little more light on the subject (so to speak) is the way to go. Big Smile

  • Member since
    June 2009
Posted by jimbot58 on Sunday, March 28, 2010 1:03 AM

White is the worst I thing, but the same issues come up with gray on gray, black on black and so on. I use a light reflected off the surface as well.

*******

On my workbench now:

It's all about classic cars now!

Why can't I find the "Any" key on my keyboard?

 

 

 

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