The base piece slots in over the 12v charger, and the magsafe holder snaps into the large piece. The two pieces have been separated to make it easy to print. Only print in PETG or another temperature-resistent filament.
The author remixed this model.
Separated the magsafe holder from the volvo insert for modularity and ease-of-printing. Added a small lip on the front of the Volvo insert for a ‘snap fit’ under the XC60's trim.