Chapter one — the line
The whole job lives in the cut line
Anyone can roll a wall. The difference shows where the wall meets the ceiling, the trim and the window. That crisp, dead-straight line is what separates a paint job that looks finished from one that looks rushed — and you only get it by cutting in slow, by hand, with a loaded brush and a steady wrist.
"We'd rather take the extra hour on the edges than leave you looking at a wavy line for the next ten years."
So we tape what should be taped, free-hand what's better free-handed, and we don't call a wall done until the edges are sharp from across the room.

