Self-guiding cutting tool (100) for cutting an adhesive film (20) applied to the roof panel (30) of a car, wherein the roof panel is connected to a side panel (31) of the car by a joint area (32) containing a welding ditch channel, said cutting tool (100) comprising a cutting device (6), at least one guiding means (2) guiding the cutting device (6) over the welding ditch channel of the joint area (32), and at least one transporting means (3) allowing the cutting device (6) to be moved over the welding ditch channel of the joint area (32). Also provided is a method of applying adhesive films to the roof panels of a car using the cutting tool.

Provided are devices and methods of applying a film (120) to a first panel of a vehicle wherein the first panel is connected to a second panel of the vehicle by a joint area containing a ditch portion (52) that is recessed relative to the first panel. The method includes the steps of placing into the ditch portion (52) an elongated jig (100) that comprises a shim (102) extending continuously along the length of the ditch portion (52), the shim (102) protruding above a height of the first panel, applying the film (120) to the first and second panels such that the film (120) extends over the elongated jig (100), and then using a tool (122) to apply pressure against the film (120) and toward a cutting edge of the shim (102) along the length of the shim (102) to trim the film (120) along a peripheral edge. The elongated jig (100) can then be removed from the ditch portion (52), and the peripheral edge of the film (120) adhered to the ditch portion (52).

Provided are devices and methods of applying a film (120) to a first panel of a vehicle wherein the first panel is connected to a second panel of the vehicle by a joint area containing a ditch portion (52) that is recessed relative to the first panel. The method includes the steps of placing into the ditch portion (52) an elongated jig (100) that comprises a shim (102) extending continuously along the length of the ditch portion (52), the shim (102) protruding above a height of the first panel, applying the film (120) to the first and second panels such that the film (120) extends over the elongated jig (100), and then using a tool (122) to apply pressure against the film (120) and toward a cutting edge of the shim (102) along the length of the shim (102) to trim the film (120) along a peripheral edge. The elongated jig (100) can then be removed from the ditch portion (52), and the peripheral edge of the film (120) adhered to the ditch portion (52).