might of been grease but its doubtfull, Ive done a fair bit of spray painting before on cars and other objects and know about things like that but this mosaic effect on the paint is something new to me, Ive followed procedure to the t!
my only explanation is a reaction from the paint to the resin in places where the resin is deeper than others, Ive noticed one of the spots is where theres a join in the hull construction and there was more resin filling the dip so wonder if that was the cause.
this is the sort of work i turn out when i man the fiberglass, filler and spray can, it was a Mk2 mondeo rear bumper for a cabby mate of mine
before i started, oh dear.... still, have you ever seen a Mk2 mondeo that hasn't got cracked bumpers?
as if by magic, the damage has gone! I repaired a door and sprayed other parts on the car for him and the idiot wrote the car off the same day i returned it to him grrrrrr