When the finished job requires a very fine paint line, a 3M fine line masking tape is first applied to the surface. 3M crepe masking tape is then applied over the fine line tape.
The edge of the crepe is set back from the paint line edge of the fine line tape. The crepe holds gross masking paper or film.
NOTE: Before applying the crepe tape lightly scuff the back of the fine line tape with a Scotch-Brite? Hand Pad to increase the adhesion between the two tapes if needed. This is particularly important if the crepe tape is holding large gross masks.