What should be minimum torque for nema 17 motor for using it in 1.75 mm based extruder.like mininilistic mk7
Actually I got only one option. It’s 43N.cm torque motor.
NEMA17 longnecks FTW.
I’ve only worked with classic geared extruders (and 3mm fila), but 43Ncm sounds like it’ll do just fine. Especially with 1.75mm filament.
I’d say that 30N•cm would be a good minimum for a standard 11ish-mm effective diameter drive gear. A smaller drive gear could do it with less. For instance, the Type-A machine uses a direct-drive Nema14 extruder with about half that torque, but it uses a drive gear with about half the normal diameter (comparable to the hobbed bold on a wade’s-style extruder), which has the same effect as gearing it down 2:1. I had calculated that this should work before I met them in NY and saw that they had actually done it.