A copper plate is an item molded with copper. The copper plate can be used to upgrade the electrical workbench to level 3.
Copper Plate (Human Figure)
Copper Plate, Islands Wiki
Copper Bolt, Islands Wiki
Discuss Everything About Islands Wiki
Barbecue, Islands Wiki
Copper Plate, Islands Wiki
Steel Plate, Islands Wiki
Workbench Tier 1, Islands Wiki
Island, Largest Island in the World