I always roll on interior latex on finished cleared playfields flat on work horse. I protect the surface with paper. I look for a area with out holes to get some of the excess off. Then roll on. Good now at not getting paint on the rollovers! The prop hole I jam the end of the small roller into the prop hole, & use a q-tip to spread in the corner. If I have more to do soon I might keep the foam roller in a bag.
Inserts leave residue epoxy that gets sanded off before printing. My printer masks the back completely for printing. So I remove this before playfields go for clear coat. I have learned to never rush uv ink playfields out if you can still smell the ink!
Tonight I started cleaning the 7 Star Gazer playfields. So by next week all playfields will have lenses installed. Hoping that it is dry Saturday to work on the 9 Seawitch for sanding installed inserts. 20 Seawitch blanks were delivered to the sign shop this morning.
Saturday (today) is sunny & high about 52 degrees F. So I will be sanding the rest of Seawitch playfields.