Paint adhesion

[julianb]

For the first time in years, had a shell flake a plain fluorescent yellow around the front wheelarches and bumper. Customer not entirely chuffed, but I think tbf, it was simply too fresh and he did smash it into just about everything on its first run.... Did warn him... usually leave shells somewhere warm for several days before handover...



Has anyone ever used any sort of adhesion promoter?


Until now, washing liquid, cold water and a soft household paintbrush has been more than adequate to ensure a clean and grease free surface...


cheers


J