Preparing Bonding Surfaces: Cleaning

To prevent possible grease residue from spreading onto the surface when sanding down the surface until bare at a later stage, clean the bonding surfaces using a lint-free cloth soaked in isopropyl or acetone. Leave cleaned surfaces to dry for 15 minutes.

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Degreasing bonding surfaces 

Then clean the bare bonding flange areas using a lint-free cloth soaked in isopropyl or acetone until there are no more residues on the cloth.

Leave cleaned surfaces to dry off for 15 minutes; the bonding surfaces must be completely dry.

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Degreasing bonding surfaces