Two separate questions: Layers steps and speeds

Why aren’t there layers between 0.10 and 0.20 in Creality Print for the V3? What would the correct intermediate steps be, 0.12 and 0.16?
I don’t know what the motor steps for the V3 are or what the correct values should be.

Another matter, what speeds would you recommend to avoid premature wear on the printer? Are the default speeds in Creality Print too high?

My question is very good or very bad, since no one answers! :sweat_smile: