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Primer and compatability

posted May 21, 2011 05:54:43 by Howard
Any one have a source to check out compatibility with the different brands of primer and paint. Enamel, Lacquer, Acrylic, & Oil what brand is which and how do they react to each other. What can be painted over what by brand. I have several brands of paint and they all have specific colors I want to use either in an air brush or with a brush.
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JohnAdmire said May 22, 2011 02:55:41
Howard

I don't have a source to check out the compatibility of different brands of paint and how they work together. But I can tell what I do and I think most modelers do as well.

I will usually prime with a Lacquer base paint from the spray can.I like to use Tamiya Fine White Primer but really any Lacquer paint even automotive primer will work and is quite a bit cheaper.I use Lacquer because it really bites into the plastic much better than other alternatives. After this dries good you will have a hard base coat to place your first color coat.Priming is not absolutely necessary, I have built many models without doing it. Some people like to use any extra available paint on their workbench and some don't do it at all. The only time that I would recommend that you use lacquer primer is when using metallic paint as your color paint, this will prevent the metallic from pulling off when you tape on it.

I usually don't work with anything except acrylics due to the non toxic nature of the paint. So I will now paint the model that is already primed with and acrylic of my choice, usually Tamiya, Polly Scale or Model Master.

After the color coat is done and everything is the way you want it, it is time to spray the whole model with Future. Let this dry for a day or two. After its dry you can put on your decals. After they are completely dry usually a couple of days then I will spray Future over the dry decals to seal them in, then let dry again.

Now I will usually put on a wash of some sort with artists oil paints and mineral spirits. Then let this dry and then spray a clear flat coat on everything if this is how the model is supposed to look.

So we have used Lacquer, Acrylic and Mineral Spirits. There will never be a chemical reaction with the mixtures that will harm the model when applied in this order.

If you were to paint with Enamels instead of Acrylics then I may not use the Lacquer primer and paint the model with the enamels first. I would do this only because the mineral spirits may have and effect on the lacquer paint. Then I would use an acrylic wash on it, NO MINERAL SPIRITS, it will lift the enamel paint off the model.

Basically you want to alternate the types of paint so that you are not washing or painting the model with the same thinner based paint that was used in a previous step, unless it is protected with a clear coat.
You may be able to get away with using the same thinner based paint in succession if you protect the under coat with say a good Future coat to protect it.

Now these rules work for me but you may find that others have other opinions.

Hope this helps a little
John
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