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                        Now I'm confused.

                        682 views
                        7 replies
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                        Anonymous
                        • Member since
                          November 2005
                        Now I'm confused.
                        Posted by Anonymous on Wednesday, June 29, 2005 9:35 PM
                        Last night I tried to create a natural wood look to a propeller (Sopwith Camel) by applying a thinned acrylic matt brown (Tamiya paint and thinner) by brush over a sprayed Model Master enamel base coat (Wood thinned with mineral turpentine). I thought I was safe against incompatabilty but the base coat lifted. The sprayed colour had cured for 72 hours. So what did I do wrong? Future is acrylic based -(right?) and this is used all the time over enamels. If I was to use oils for the wash these would be thinned with turpentine and the same problem could occur. So now I'm confused. Fortunately I was able to clean off all old paint and respray the base coat to a satisfactory finish but where to from here?
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                        ABARNE
                        • Member since
                          February 2003
                        • From: Southern California, USA
                        Posted by ABARNE on Wednesday, June 29, 2005 11:56 PM
                        Sounds strange to me. I have use acrylic washes all the time over enamel, with absolute impunity. I've never been a fan of turpentine, although my bad experiences with it were as a wash rather than the thinning agent in a base coat. Try thinning the enamel base coat with ordinary thinner?

                        Andy
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                        tho9900
                        • Member since
                          July 2004
                        • From: SETX. USA
                        Posted by tho9900 on Thursday, June 30, 2005 6:48 AM
                        you could also future over the base coat once cured then apply the top coat. I usually do that just to be sure there is no interaction. Also it makes it handy because you can correct small mistakes easier with the future on top of the base coat.
                        ---Tom--- O' brave new world, That has such people in it!
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                        MusicCity
                        • Member since
                          January 2004
                        • From: USA
                        Posted by MusicCity on Thursday, June 30, 2005 7:00 AM
                        QUOTE: Future is acrylic based -(right?)

                        Yes, Future is acrylic. You are correct.

                        I don't know what caused your problem. There should have been no compatibility problems, you can use acrylic over enamel or laquer and should never have a problem with the acrylic causing the base to lift. Obviously you did, but I suspect that the problem is related more to the adhesion of the enamel than anything else. For some reason I think there was a problem with the enamel itself, as Andy pointed out. It didn't cure or didn't adhere or something. There shouldn't have been any problems with the wash you used.
                        Scott Craig -- Nashville, TN -- My Website -- My Models Page
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                        dtraskos
                        • Member since
                          March 2003
                        • From: Fowlerville, Mich
                        Posted by dtraskos on Thursday, June 30, 2005 8:24 AM
                        It may have been the Tamiya thinner in the acrylic paint. That may be what is not compatible with the enamal base coat. Try some of the unthinned acrylic over the enamel and see if the same thing happens. If not, then the thinner is the problem. If the same thing happens, I give up. I have never heard of an acrylic paint lifting enamel.
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                        Anonymous
                        • Member since
                          November 2005
                        Posted by Anonymous on Thursday, June 30, 2005 7:13 PM
                        Thanks all I will definitely "future" over the base coat and try again. I will let you know. Thanks for taking the time to answer.
                        Report Abuse
                        ABARNE
                        • Member since
                          February 2003
                        • From: Southern California, USA
                        Posted by ABARNE on Thursday, June 30, 2005 7:24 PM
                        QUOTE: Originally posted by traskos
                        It may have been the Tamiya thinner in the acrylic paint. That may be what is not compatible with the enamal base coat.


                        I wouldn't expect that to be the case. When I do acrylic washes, whether with ModelMaster or Tamiya acrylics, I use Tamiya acrylic thinner, and have never had any issues at all.

                        Andy
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                        MusicCity
                        • Member since
                          January 2004
                        • From: USA
                        Posted by MusicCity on Friday, July 1, 2005 5:51 AM
                        I wouldn't think so either. I can't remember now exactly how the label on the Tamiya thinner reads, but somewhere on the label it makes reference to the ingredients and it appears to be primarily a form of alcohol. I wouldn't think that would cause problems with a well-cured enamel finish.
                        Scott Craig -- Nashville, TN -- My Website -- My Models Page
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