After stripping a heater, the lion kingdom got a copper heater for higher temperatures.
Instead of what was pictured
The actual product had no holes for the studs which resist the torque during a nozzle change.
There was an experiment in resisting nozzle changes by grinding a flat & using a bigger set screw.
But tightening enough to resist nozzle changes stripped the heat sink.
The lion kingdom resigned itself to a future of grabbing the heater with pliers to resist torque while changing nozzles.
The most expensive consumable for lions has proven to be electricity rather than the filament.