Touching something hot with your finger is very subjective.
- The stepper motors have thermal power. It's the same in summer, of course. Only the resulting temperature at the stepper motors is higher.
- In summer, you are more sensitive to damp skin.
In winter and autumn I also touch parts with 100 degrees Celsius for a short time. (I often weld aluminum)
In summer the 80 degrees Celsius of a printing plate already frightens me as if it was 200.
Only one measurement would be objective.
How well stepper motors can be moved also depends on the gear reduction and the electronic motor drivers.
The S5 has a higher reduction ratio than the previous models.
The drivers could be different (I haven't looked).
For reliable statements you should measure the temperature and current consumption.
Everything else is strange.
No offense meant!
In general if you can hold your finger at two second, it's quite normal I'll say..
This also depend of the length and temp setting of your printer while printing your object.
Back then, these stepper motors was very hot and you could easily burn your finger if you touched it.
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