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Help! I sprayed TS-13 and it ruined the base coat!

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  • Member since
    January 2021
  • From: Somewhere near Chicago
Help! I sprayed TS-13 and it ruined the base coat!
Posted by Teenage Modeler on Friday, July 2, 2021 5:03 PM

I will try to be specific as possible.

 

I used an old test spoon, which I sprayed with Tamiya X-7. I airbrushed the paint like 2 weeks ago, so there shouldn't be an issue when it comes with paint curing. 

No description available.

The spoon was a plastic spoon. I did not prime, or sand with 3000 grit to make the paint stick. I straight up took the plastic spoon, the nimmediately sprayed it with red without doing anything to the spoon. I would also like to point out the spoon was glossy plastic.

 

I sprayed a light coat of Tamiya TS-13 to the red spoon. I put it inside a small drying box, which I fashioned from an old Gundam box. I added holes to it so the air can circulate.

After I let it dry inside the box for 7 minutes, I took the red sppon out of the box, but then I noticed a thin red line which was with contact with the red spoon and the tissue (I added to stop paint from sticking to the box). I didn't really care, since it was only a thin curved line of red.

I then sprayed the spoon with a heavy coat. I will add that maybe it was a little to heavy, the clear coat, when I added the 2nd heavy coat. I then put it back to the box to dry for 20 minutes.

When I came back, I saw that the spoon looked messy. I picked it up, and the spot where there was only a this curved line of red, it became a noticable stain (spoon for reference). The other parts in the box were primed and was dried with the red spoon.

I checked out the spoon and investigated it, and I was distraught to see that it had ruined the base coat, where it showed the bare plastic of the spoon.

 

Open Photo

The bare spots are a little more noticable in real life.

 

I was glad that I did a test spoon first. If it was in the actual model, I would have gone crazy. Can someone explain why this happened?

I'm guessing that since I did not add a primer, the red did not have anything to grab on the smooth glossy surface of the spoon, which then got dissolved after applying the Clear.

If only I could show my models to my friends...

 

 

  • Member since
    February 2021
Posted by MJY65 on Friday, July 2, 2021 6:18 PM

Spraying lacquer over acrylic is a problem.  The solvent in the TS-13 very effectively dissolved the red.   I'd suggest an acrylic gloss.

  • Member since
    January 2021
  • From: Somewhere near Chicago
Posted by Teenage Modeler on Friday, July 2, 2021 6:23 PM

MJY65

Spraying lacquer over acrylic is a problem.  The solvent in the TS-13 very effectively dissolved the red.   I'd suggest an acrylic gloss.

 

This was just a practice and test run. I read that you should put TS-13 with laquer paints. I do have laquer paint, which is the TS-30 Silver leaf. Does that mean I can use TS-13 to paint over the Silver leaf (Both are rattle cans)?

 

If only I could show my models to my friends...

 

 

  • Member since
    April 2013
Posted by KnightTemplar5150 on Friday, July 2, 2021 6:25 PM

You've applied a lacquer over acrylic. The carrier in the TS-13 is chemically "hot" enough to have lifted and disolved the X-7 acrylic base. 

You can apply acrylic over cured lacquer (like the Tamiya primer), but if you apply lacquer over acrylic, expect to see variations of the same result you have here.

  • Member since
    March 2003
  • From: Western North Carolina
Posted by Tojo72 on Friday, July 2, 2021 6:50 PM

MJY65

Spraying lacquer over acrylic is a problem.  The solvent in the TS-13 very effectively dissolved the red.   I'd suggest an acrylic gloss.

 

Was it because it came from a can,heavier coats,because I have successfully airbrushed Testors Lacquer dullcote and glosscote over Tamiya and Vallejo without any issues.

  • Member since
    November 2018
Posted by oldermodelguy on Saturday, July 3, 2021 4:42 AM

X paints are kind of hybrid solvent/alcohol based acrylic paint. They spray beautifully but I think are more susceptible to melting from lacquers, be that thinner or clear or secondary color than say craft paint, MM or Vallejo. I think I've only ever cleared these X or XF paints with acrylics, usually Liquitex varnish, a couple of times with Pledge.

The good news is your accidental find happened in a spoon test which is why we do them !!!

  • Member since
    January 2021
  • From: Somewhere near Chicago
Posted by Teenage Modeler on Saturday, July 3, 2021 7:14 AM

oldermodelguy

X paints are kind of hybrid solvent/alcohol based acrylic paint. They spray beautifully but I think are more susceptible to melting from lacquers, be that thinner or clear or secondary color than say craft paint, MM or Vallejo. I think I've only ever cleared these X or XF paints with acrylics, usually Liquitex varnish, a couple of times with Pledge.

The good news is your accidental find happened in a spoon test which is why we do them !!!

 

Haha yes. I want to test it out beforehand. Better safe than sorry!

If only I could show my models to my friends...

 

 

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