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Is my model ruined?

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  • Member since
    June 2020
Is my model ruined?
Posted by Tps85 on Saturday, June 6, 2020 7:54 PM


I attempted to do a weathering wash on my model yesterday with a mixture of isopropyl alcohol, water and acrylic paint.  After applying this, I wiped it with a paper towel and it removed all the paint down to the plastic (I tried to add a photo but wasn't able to).  I have primed it with tamiya primer, base coat of tamiya acrylic and a top clear acrylic coat.  I did this over a number of weeks so I assume it should of cured.  Any clues as to why this happened and is it salvagable?



  • Member since
    November 2003
  • From: State of Mississippi. State motto: Virtute et armis (By valor and arms)
Posted by mississippivol on Monday, June 8, 2020 7:50 PM

Oh, man, sorry I didn't see this post earlier, and I'm sorry that paint reacted that way; I understand the frustration. I'm not sure how bad it is without seeing it. It is salvageable,  but it takes some work. You might have to strip the coats off and start again unless it's only in one area; then you might just do some new paint coats to fix the area. I don't use Tamiya, so I'm not sure what types of washes work. Keep at it, my dad had issues back in the day airbrushing gloss black Polly S (which at the time we didn't realize you "couldn't " do). Three attempts and two paint strips later, he got it done! He's never done a black Phantom sinceBig Smile

  • Member since
    August 2014
  • From: Willamette Valley, Oregon
Posted by goldhammer on Monday, June 8, 2020 8:11 PM

General rule of thumb is if weathering acrylics, use enamels or oil based materials.  If weathering enamels, then use acrylics to weather.  


  • Member since
    March 2014
Posted by BarrettDuke on Monday, June 8, 2020 8:40 PM

Sorry this happened to you. Did you clean the model surface before you applied your primer? If not, it may be that the primer never really bit into the plastic, so it also just wiped away when you put a little pressure on it. Also, if at all possible, use a clear coat that is the opposite of what you are using for weathering. So, that would mean you would have wanted to use a non-water based clear coat before weathering. That gives you a better chance of not having your weathering materials eat into your other coats. I'm really surprised that Tamiya primer didn't bite into the plastic. I assume you mean the stuff in the spray can. Most likely, the model had a lot of mold release still on it, or some kind of contamination. I use 90% Isopropyl alcohol to wipe down the parts and then spray with Tamiya Surface Primer. The good news is that it's hard to ruin a model with acrylic paint. If you feel like you just have to start all over, you can soak it in Windex for an hour or two and most of that acrylic paint will come right off, and you can start all over. No worries. Barrett

  • Member since
    June 2020
Posted by Tps85 on Monday, June 8, 2020 9:53 PM

Klingon D7 Battlecruiser

  • Member since
    September 2012
Posted by GMorrison on Monday, June 8, 2020 11:28 PM

Words of wisdom.

My own approach; any paint followed by acrylic clear overcoat followed by oil paint diluted in odorless turpentine.

Modeling is an excuse to buy books


  • Member since
    July 2013
  • From: Chicago area
Posted by modelmaker66 on Tuesday, June 9, 2020 3:47 AM

Re paint after strip.

  • Member since
    November 2018
Posted by oldermodelguy on Tuesday, June 9, 2020 4:25 AM

Obviously you're down to bare plastic so you have to repaint. The alcohol is what most likely ate the Top coat though. You haven't ruined the model just the paint job, we've probably all been there at one time or another so be of good cheer and get to work !!

  • Member since
    July 2018
  • From: The Deep Woods
Posted by Tickmagnet on Tuesday, June 9, 2020 6:32 AM

Pastels mixed with water and a drop of dish soap and you have a wash that is  worry free with easy odorless water cleanup.



  • Member since
    November 2018
Posted by oldermodelguy on Tuesday, June 9, 2020 8:50 AM


Pastels mixed with water and a drop of dish soap and you have a wash that is  worry free with easy odorless water cleanup.


Yes water and a touch of dish soap is pretty safe, works with craft paint washes too on clean up as long at you catch the dry time right. Artist acrylics too. I haven't tried the pastels, gonna have to give that a whirl one of these days, every now and then someone mentions it and it sparks an interest every time..


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