3M Tape Primer 94 can be used to promote adhesion of 3M Vinyls to surfaces such polyethylene, polypropylene, ABS, PET/PBT blends, concrete, wood, glass, metal and painted metal surfaces.
Surface Preparation: The bonding surface must be relatively clean and dry. Contaminated surfaces should be cleaned with a 50/50 Isopropyl Alcohol and water mixture. A clean lint-free cloth should be used.
Application: Apply a thin uniform coating to the bonding surface using the minimum amount that will fully coat the surface. Allow 3M primer 94 to dry thoroughly before applying tape. This is usually accomplished in 5 minutes at room temperature. Be sure the primed surface remains free from contaminants prior to applying the tape. Porous surfaces may require 2 applications of 3M primer 94 for uniform coverage and good adhesion. Allow first application of primer to dry before applying the second coat.
Clean up: 3M primer 94 can be removed with isopropyl alcohol. Vigorous scrubbing may be required. Note: Carefully read and follow manufacturer's precautions and directions for use when handling cleaning solvents.
So in a nutshell those tricky curves and tension filled edges are held down with the help of this primer pen.