I am applying Model Masters acrylic paint over plastic. The paint does not seem to stick to the plastic. If I mask a portion of a painted area to paint the adjacent area and then remove the masking tape, a good portion of the paint will remain with the masking tape leaving a very big blotch of unpainted plastic.
Should I apply a primer first? Is so, what primer? Should I rough up the surrface with sand paper before I paint? If so, what grit should I use? Should I do both? Or something else?
I was prety good at painting when I was a kid. What happened? Did they change paints?
Thanks, Jay