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Spraying enamel over lacquer ?

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  • Member since
    February 2013
Spraying enamel over lacquer ?
Posted by tomwatkins45 on Tuesday, April 23, 2019 6:33 AM

I have heard that one way or the other is a no-no, but I can't remember which. Can I spray Model Master Enamel over Hataka Orange Line lacquer without causing a problem ? Incidently, this was my first time using the Hataka paint. I thinned it approx. 50-50 with their thinner, sprayed it at 20 psi using a Grex TG brush. It sprayed beautifully, covered well with about 3 light coats, and dried almost dead flat very quickly. It seems to be good stuff. With MM enamels becoming harder to get, it may be a good alternative.

Thanks,

Tom

  • Member since
    November 2018
Posted by oldermodelguy on Tuesday, April 23, 2019 8:46 AM

Enamel generally goes over well cured lacquer just fine.

  • Member since
    February 2013
Posted by tomwatkins45 on Tuesday, April 23, 2019 9:03 AM

Obviously I was hoping that's how it was. I'll let it cure a bit more and have at it. Thank you very much.

Thanks,

Tom

  • Member since
    May 2013
  • From: From the Mit, but live in Mason, O high ho
Posted by hogfanfs on Tuesday, April 23, 2019 9:15 AM

oldermodelguy

Enamel generally goes over well cured lacquer just fine.

 

I believe this is true as well. But, if you have some spare plastic, i'd do a small test just to be sure. 

 Bruce

 

 On the bench:  1/48 Eduard MiG-21MF

                        1/35 Takom Merkava Mk.I

 

  • Member since
    November 2009
  • From: Twin Cities of Minnesota
Posted by Don Stauffer on Tuesday, April 23, 2019 9:17 AM

Lacquer over almost any paint is a problem- but that refers to real lacquer.  There are now acrylic lacquers, and I don't know whether those are okay over other paints.  Real lacquer thinner is really hot.

 

Don Stauffer in Minnesota

  • Member since
    November 2018
Posted by oldermodelguy on Tuesday, April 23, 2019 3:22 PM

It doesn't matter much what the lacquer is under the enamel top coat as long as the lacquer was well cured. As lacquer ( any paint) dries it shrinks. You want that process done. They have different cure rates/dry times.

On another note, lacquer over enamel can be a problem because lacquer can chemically attack the enamel causing wrinkles ( especially if the enamel is fairly fresh) , eaten paint etc, or just soft spots. Hot lacquer is tough stuff. Hobby lacquer less so. Enamel is mild by comparison. Hot lacquer will eat plastic parts if it doesn't dry quick enough, enamel won't for instance.

 

  • Member since
    February 2013
Posted by tomwatkins45 on Tuesday, April 23, 2019 4:00 PM

Thanks to all . I'm going to let it cure thoroughly and then give it a whirl. In the future, I'll stick with one or the other, but the MM couldn't be found at the time and the Hataka was readily available.

Thanks  Again,

Tom

  • Member since
    March 2003
  • From: Western North Carolina
Posted by Tojo72 on Tuesday, April 23, 2019 4:15 PM

Don Stauffer

Lacquer over almost any paint is a problem- but that refers to real lacquer.  There are now acrylic lacquers, and I don't know whether those are okay over other paints.  Real lacquer thinner is really hot.

 

 

Hey Don,question,Your not talking about stuff like Testors Lacquer dull or gloss,I have sprayed them over everything with no problems.

  • Member since
    May 2013
  • From: From the Mit, but live in Mason, O high ho
Posted by hogfanfs on Wednesday, April 24, 2019 7:32 AM

Tojo72

 

 
Don Stauffer

Lacquer over almost any paint is a problem- but that refers to real lacquer.  There are now acrylic lacquers, and I don't know whether those are okay over other paints.  Real lacquer thinner is really hot.

 

 

 

 

Hey Don,question,Your not talking about stuff like Testors Lacquer dull or gloss,I have sprayed them over everything with no problems.

 

Same here, I have never had a problem with Testors Lacquer dull or gloss either.

 Bruce

 

 On the bench:  1/48 Eduard MiG-21MF

                        1/35 Takom Merkava Mk.I

 

  • Member since
    May 2013
  • From: Indiana, USA
Posted by Greg on Wednesday, April 24, 2019 8:19 AM

Tojo72
Hey Don,question,Your not talking about stuff like Testors Lacquer dull or gloss,I have sprayed them over everything with no problems.

I'm also curious.

Not only Testor's Dull and Glosscote, but also all the flavors of Alclad Klear (lacquers, not the aqua acrylic). Sprayed them all over just about everything.

What you say makes perfect sense, now you have me wondering why the above has NOT attacked my underlying paints.

-Greg

  • Member since
    November 2009
  • From: Twin Cities of Minnesota
Posted by Don Stauffer on Wednesday, April 24, 2019 9:09 AM

Tojo72

 

 
Don Stauffer

Lacquer over almost any paint is a problem- but that refers to real lacquer.  There are now acrylic lacquers, and I don't know whether those are okay over other paints.  Real lacquer thinner is really hot.

 

 

 

 

Hey Don,question,Your not talking about stuff like Testors Lacquer dull or gloss,I have sprayed them over everything with no problems.

 

True, and I don't know why.  My speculation is that it dries so fast it doesn't have time to affect undercoats.  But that is speculation.  I often spray Dullcoat or Glosscoat over enamel, and have even done it over acrylics, but I try to avoid the latter unless it has dried for many days.

 

Don Stauffer in Minnesota

  • Member since
    February 2013
Posted by tomwatkins45 on Thursday, April 25, 2019 4:23 PM

I sprayed a test panel last night, MM RAF dark green over Hataka dark earth. I sprayed it on heavy and wet and it worked just fine. No bubbling, crazing, or etchng at all. Thanks again to all  who responded.

Tom

  • Member since
    May 2013
  • From: From the Mit, but live in Mason, O high ho
Posted by hogfanfs on Thursday, April 25, 2019 7:48 PM

Tom,

Thanks for letting us know. Yes

It's good to know there is another option in a paint maunfacturer. I will eventually give Hataka a try. 

 Bruce

 

 On the bench:  1/48 Eduard MiG-21MF

                        1/35 Takom Merkava Mk.I

 

  • Member since
    February 2013
Posted by tomwatkins45 on Friday, April 26, 2019 6:58 AM

You're very welcome. So far, I've sprayed two of their colors, RAF sky type S and RAF dark earth. Both sprayed beautifully. They remind me a lot of the original, pre-Testor Floquil, but with much less smell. I'm very pleased with them so far.

Tom

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