When performing a single-sided plastic repair, how deep should a technician V-out a groove into the plastic body part?

In a single-sided plastic repair, the correct strategy is to V-out a groove approximately 75% through the thickness of the plastic body part. This depth is optimal because it allows sufficient material to remain intact on the reverse side to support the structural integrity of the part. If the groove goes too deep, as in the case of cutting through the entire thickness or reaching 90%, it could compromise the strength of the part and lead to failure of the repair. V-ing the groove to the correct depth also ensures that the adhesive or bonding agent used to fill the groove has enough contact surface area for a strong bond, while still allowing for proper curing and tape or other reinforcement materials to be applied effectively. This balance of depth is crucial for achieving a durable and effective repair that maintains the functionality of the plastic component.