Which method is preferred when removing a door skin?

Grind away the edge of the door skin is preferred because this method minimizes the risk of damaging the underlying door structure or any components that may be attached, such as wiring and hardware. Grinding carefully along the edge allows for a cleaner separation of the skin from the door frame without unnecessary force that an air chisel might apply. This technique also helps control the removal process, reducing the likelihood of distortion to the door itself, which can be crucial for proper reinstallation of the new skin.

Using an air chisel, while potentially effective, poses a higher risk of damaging the underlying metal, especially if the operator does not have precise control over the tool. Such risks may lead to more extensive repairs and complications, making grinding the preferred choice for a skilled technician focused on maintaining the integrity of the component being worked on.