Mask First Painted Side

What happens here

After the black paint has dried completely (approximately two hours), stand the door up, leaning it against a stable surface like a truck or wall. Use a 3M hand masker tool with 3M 2020 tape and 72-inch masking film to carefully cover the entire black-painted side of the door. Ensure the masking tape creates a clean, straight edge along the door's perimeter to prevent any overspray onto the black side when painting the white side.

Goal: Mask off the newly painted black side of the door to protect it from overspray while painting the opposite side white.