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How To Fix The Finish

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  • Member since
    November 2006
How To Fix The Finish
Posted by Canadian EH on Monday, December 4, 2006 2:58 PM

I decided that the currect project I am working on would be the first airbrushing attempt for me so yesterday evening I airbrushed the hood of the el camino I am working on and till now I have only used spray cans with ok results. Well from reading the posts on this site I decided to go with several  thin coats instead of a couple of thicker coats. I wound up with a stippled finish instead of a smooth finish. My guess is that I didn't use enough paint, I didn't do the "wet" coat (in my understanding I think that just means more paint but correct me if I'm wrong) after the light coats like some of the posts suggest. I was wondering if how long I should let the paint dry before wet sanding and applying a "wet" coat of paint or should I remove all the paint and start again?

I am using model master enamels and a badger 200 airbrush with a cheapy testor air pump.

  • Member since
    October 2006
  • From: Iowa
Posted by Mist086 on Monday, December 4, 2006 3:52 PM
Did you thin the paint?  That could cause the problem if you didn't.  Also, how far back was the airbrush when you sprayed and was the car primered?
  • Member since
    November 2006
Posted by Canadian EH on Monday, December 4, 2006 4:06 PM
I did thin the paint 1 part thinner to 3 parts paint. I would say I had the airbrush too close after reading more post but it was about 1 1/2" to 2" away from the part. No the part wasn't primed.
  • Member since
    November 2005
Posted by Anonymous on Monday, December 4, 2006 4:12 PM

the paint to thinner ratio still sounds off,,,mix to the consistency of skim milk

if you want to try the same part again,soak it in brake fluid for about 15 minutes then the paint will wash off,,,,try again,it takes practice

  • Member since
    November 2006
Posted by Canadian EH on Monday, December 4, 2006 5:14 PM
wash off? with water or thinner?
  • Member since
    November 2005
Posted by Anonymous on Monday, December 4, 2006 6:28 PM
when you soak it in brake fluid for a little while the paint will lift off the plastic,,,,,,,then wash it (scrub a little with an old toothbrush) in warm soapy water,the paint should fall right off with no harm to the plastic
  • Member since
    November 2006
Posted by Canadian EH on Monday, December 4, 2006 7:30 PM
That worked perfectly but that doesn't explain what I did wrong in the first place. I mixed some more paint in a seperate container the same way I did yesterday and I would say its the consitancy of skim milk so do I just need to apply more paint? Or am I doing something else wrong too?
  • Member since
    October 2006
  • From: Iowa
Posted by Mist086 on Tuesday, December 5, 2006 2:26 PM

 Canadian EH wrote:
That worked perfectly but that doesn't explain what I did wrong in the first place. I mixed some more paint in a seperate container the same way I did yesterday and I would say its the consitancy of skim milk so do I just need to apply more paint? Or am I doing something else wrong too?

 

You need to primer it also.  Helps the thinned paint stick easier.  Also it might take a couple more  coats than you usually do since it's thinned paint.  My F-14 i'm building now has about 6-7 light coats over the primer.

  • Member since
    November 2006
Posted by Canadian EH on Tuesday, December 5, 2006 2:56 PM

If I wet sand the plastic do I still have to prime? Or should I wet sand the plastic and wet sand the primer coat?

 Joey

  • Member since
    October 2006
  • From: Iowa
Posted by Mist086 on Tuesday, December 5, 2006 3:25 PM
I prime EVERYTHING!  It shows the imperfections, and helps hold the base coat paint.  Never tried the wet sand instead of priming so i don't really know if that would work.
  • Member since
    November 2006
Posted by Canadian EH on Tuesday, December 5, 2006 4:04 PM

Thanks for the help, I have two projects here maybe I will try both methods and see which one works best.

Joey

  • Member since
    October 2006
  • From: Iowa
Posted by Mist086 on Tuesday, December 5, 2006 4:14 PM
That's what this is all about.  Trying new things.  Let us know what the results are.  I'm kinda curious
  • Member since
    August 2004
  • From: Nowhere. (Long Island)
Posted by Tankmaster7 on Monday, December 11, 2006 10:09 PM
priming is unnecessary. you can paint over bare plastic with no problems whatsoever. I never usually prime my models.
-Tanky Welcome to the United States of America, a subsidiary of Exxon Mobil Corporation, in partnership with Halliburton. Security for your constitutional rights provided by Blackwater International.
  • Member since
    December 2002
  • From: NYC, USA
Posted by waikong on Tuesday, December 12, 2006 9:26 AM

In regards to primer, note that I prime mainly to pick out any imperfections in seam filling or sanding, and not necessarily for better adhersion of the paint.  It seems I never have any problems  not priming with certain manufacturers but do with others -  the paint lifts from Tamiya tape even after overnight drying.

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