Most interior painting projects will present corners and edges. Corners, trims, splashes and accents will require cutting in — which generally requires the most patience, preparation and skill. There is a lot of debate among painters whether it is better to cut in before or after applying the roller. Solo painters may want to prepare the surfaces first, apply painter’s tape where required and cut in before applying paint to the rollers. Painters working in teams can split cutting in duties in sections while other team members are applying paint with rollers.