Probably been covered before, but don't remember (senior moment.....or two)
what is the best primer for plastic models. Painting a Precision Craft F
unit pair with Polly Scale acrylic. Have heard many different stories (
Rustoleum auto primer, Floquil enamel primer and many others) about what
works best? Thought this would be the place to ask. Actually I'm open to all
suggestions on paint and primers.
Thanks for any and all replies, Jim
Several aspects to this question:
1. What primer will provide a good surface for paint adhesion?
2. What primer won't harm the plastic?
3. What type of paint are you comfortable with?
To answer (1), any primer that dries flat will provide a good base for
The other ones I can't really answer; perhaps others here can address
(2). (3) depends on your experience and what kind of equipment
(airbrush, etc.) you have.
Found--the gene that causes belief in genetic determinism
Primers have two functions, to improve the bond between finish coat and
surface, and to provide uniform neutral colour for best colour
rendition. For some surface/paint combinations they also serve to
protect the surface and the finish coats from each other.
Re: 2): two methods:
a) Acrylics suitable for plastic don't really need a primer, but the
surface must be clean. Try a citrus-based cleaner, but try it one a
piece of scrap styrene first. Use a dilute solution several times with
rinsing in between. Follow up with detergent. Rinse thoroughly and let
air-dry. Then apply a neutral colour all over the model.
b) After cleaning the surface as above, you may apply a couple of three
very light coats of solvent based primer (eg, light grey.) Spray from a
distance such that the paint is almost dry when it hits the plastic. The
solvent will etch the surface just enough that the primer will stick and
provide "tooth" for the finish coats.
As a general rule, a primer coat should be just dense enough to provide
uniform colour. It doesn't take much to provide the "tooth."
Re: 3) I'm comfortable with both enamels and acrylics, but prefer acrylics.
I think I'm going to Skip the primer as I will be using acrylic (Rock Island
maroon) on a cream colored undecorated precision craft A & B F unit. I'll
just make sure its clean as one can get it.
I use automotive primer aerosols for priming everything, except brass
(and aluminium) where a degree of etching is required. I spray very
lightly to get full coverage in 2-3 coats. Have tried other types but
automotive primer works just as well for me. One can buy red-oxide,
black or white here in NZ.
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