Help and Feedback on Painted part...

Hi ;

 To add to what you have recieved . I have found Tamiya Primer susceptible to " Finger Grease "

When you wash your parts , Make sure they are rinsed well and let them air dry .Then , With Gloves handle parts .

    If you don't have clean hands or use gloves then the dreaded " Finger Grease " will bite you .This is what it sounds like . Also any prop paint I do is as thin as I can get without being see-through .    T.B.

Says your "images are not publicly available"...... But I think the replies above cover it so far.... I had some primer that refused to adhere and "cracked" not to long ago, from a spray can....

It's very unusual for paint to come off of the primer. More likely the primer fails. Like Don said, you can easily tell by looking at the inside of the flake.

Sometimes acrylic 'metallic' paints have little flakes to make the finish look metallic. Not sure which silver Acryl you might be using, but maybe this is what you are seeing?

When the flakes come off, do you see bare plastic where the flake was, or do you see primer?  That is, is the primer flaking off too, or just the paint?