The orange PLA i used to print the flippers is quite old and produced some interesting patterns on the exterior but at 60% infill they are very strong.
I decided to use remote car door lock motors to power the flippers since 12v solenoids don't give enough push for a proper pinball experience.
There is much still left to do, this was a 1 day build using particle board, cardboard and hot melt glue. Pretty happy with the results so far :)
Thanks for the idea!