Small lines in the enclosure of the Power Mac G4 (QuickSilver) computer are called mold lines. They occur when the computer is manufactured, and may appear on the enclosure's inside and outside surfaces. Mold lines are not cracks, and do not represent a weakness or defect in the plastic.
On the Power Mac G4 (QuickSilver) computer, mold lines may be visible at these locations:
- below the optical media bay
- below the Zip drive bay
- to the side of the front panel buttons