‘glass is fairly simple to paint and follows standard automotive for the most part: prime, seal, color, clear. I don’t feel a flex additive is necessary for ‘glass- if it’s flexing that much it’s gonna crack anyway.
The bitch of ‘glass is the prep work-never expect a glass panel to be straight, no matter what it’s gonna be wavy. How the panel is laid up makes a difference as well- laid out cloth- mat or chopper gun.
Look up member “palepainter”
The man is an incredible artist and painter.
https://www.ar-15.co/members/2212-palepainter
https://www.mikelearn.com/