I have a motor spindle from something i took apart.
Looks like a squirrel cage but it appears as though the 'copper bars' are a thin plating on the surface.
Is this likely, they appear to be about 3 thou thick, or proud of the surface.
2 cm diameter about 10 cm long , motor is rated at 500 W at 50,000 rpm.
Whole thing has a ground or polished appearance.