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Paint peeling off

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  • Member since
    July 2004
  • From: Sonora Desert
Posted by stikpusher on Tuesday, June 2, 2020 4:05 PM

Of Models & Monsters

I used Tamiya's X-20 acrylic thinner and I primed the top half first and let it dry for a day then flipped it over to do the bottom half the next day and left for another day.

 

It sounds like you gave adequate time for drying and curing. I’d put it down to poor adhesion of the primer. In that case, like Tony/Tojo does, try Mr Surfacer or Tamiya primers. Those I have used, and work very well. 

Youll have to strip off original Vallejo primer before using any new primer, as anything applied over it will not be able to make direct contact with the plastic surface.

 

 

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

U is for URANIUM... BOMBS!

N is for NO SURVIVORS...

       - Plankton

LSM

 

  • Member since
    May 2020
  • From: Toronto
Posted by Of Models & Monsters on Tuesday, June 2, 2020 3:53 PM

I used Tamiya's X-20 acrylic thinner and I primed the top half first and let it dry for a day then flipped it over to do the bottom half the next day and left for another day.

  • Member since
    July 2004
  • From: Sonora Desert
Posted by stikpusher on Tuesday, June 2, 2020 2:52 PM

I’ve read that Vallejo’s primer is not the best. But I can’t say firsthand as Ive never used it myself. But if the primer is lifting from the plastic, it certainly sounds like a problem with the primer adhesion. It doesn’t matter what paint that you use on top of the primer, if the primer does not stick to the plastic. 

A final wipe down of the model surface before the build is primed is not a bad idea, but whatever is used needs to be completely dry. Not to mention the fact that Vallejo paints usually do not interact well with alcohol.

How long of time did you give the primer to dry and cure before you started painting with the Tamiya paint? 

 

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

U is for URANIUM... BOMBS!

N is for NO SURVIVORS...

       - Plankton

LSM

 

  • Member since
    March 2003
  • From: Western North Carolina
Posted by Tojo72 on Tuesday, June 2, 2020 2:46 PM
What did you thin the Tamiya with I like a primer with more bite,like Tamiya Extra Fine or Mr Surfacer

  • Member since
    May 2020
  • From: Toronto
Paint peeling off
Posted by Of Models & Monsters on Tuesday, June 2, 2020 2:43 PM

So as I expected with my first foray into airbrushing , I've run into a problem with my Tu-160.  I washed the sprues in soapy water, built the model, sprayed the primer, sprayed a few coats of white paint, and now parts of the model are peeling right down to the plastic.  Upon doing research i've heard some people say that using isopropyl alcohol on the model before spraying will help it stick better, is there any truth to this?  Just for clarification I used vallejo's gloss black primer and a mix of Tamiya X-2 (White) and XF-2 (Flat White).

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