Sorry but this time I´m not agree....
I´m not a "fan" of the primer coat.
This is good when you have a modell with many parts of different color glued or if you put caulk on joints.
With the primer you can see if you make a good job on joints with the sandpaper....and you have a entire surface with the same color....then, the colours have a good effect....because many paints are translucent....no opaque.
For this reason....if you want bright colors....you need a clear surface.
The power of adhesion of a primer coat is the same of a normal paint....we don´t win nothing....we only make a more gross coat.
For a good adhesion....better make a previous work with a very soft sand paper....and clean of grease the surface before paint.
A last trick to paint our Playmo.parts.....use a final coat of satin varnish ....satin is like playmo-plastic....no gloss....no matt
All this opinions are good to paint plastic .....but if we want paint a real car scale 1/1....or tin soldiers.....this is another cuestion...
:sparkle:Happy New Year Folks