As far as electric motors are concerned we might want to consider using rare-earth-free motors. Example: https://advancedelectricmachines.com/ssrd/ https://adv

As far as electric motors are concerned we might want to consider using rare-earth-free motors. Example: https://advancedelectricmachines.com/ssrd/ https://advancedelectricmachines.com/ssrd/ This one also uses aluminium rather than copper wiring which has advantages when recycling apparently because any copper content that remains with recycled steel makes it less durable.