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[clough42]

Clough42 - I noticed you had designed and used fan shrouds and fans for the x axis motor and extruder motor. I just got my i3V printer and have only printed 3mm pla via J Head, however none of the motors get hot. I do have some other experience with stepper motors that have gotten hot in operation but these seem fine. What types of print/materials lead to the extra cooling being needed?

It depends on your electronics and the current settings of your drivers. There's more information in this thread:

http://3dprintboard.com/showthread.p...Specifications

If that doesn't answer your questions, feel free to ask there.