3849b6c8__and_Decker_Drill____GICL_Wiki__Reason_for_Material_Selection
[Part Name] Outer Motor [Quantity] 1 [Model Number] 385849-00 051705-XP [Description] Round cylinder, steel banded outside, copper coils inside, plastic frame [Function] Helps convert electrical to mechanical power [Material] Copper, plastic, steel,and laminate [Reason for Appearance] Efficient design for a rotating motor [Manufacturing Process] Sheet Metal Forming, Extrusion, Machining [Reason for Material Selection] 
High conductivity,and easy to produce plastic mold
Difference between revisions of "Group 12 - Black and Decker Drill" - GICL Wiki