Heat is an important consideration when working with 3D printable ABS and PTEG materials. Even though both filaments have solid strength and a melting temperature of around 250˚, it's important to keep heat gain in mind, particularly when you are using it as an enclosure for the rotating stator of a brushless motor.
For makeSEA's 3D printed brushless motor, Christoph chose to allow ample space between the stator and rotor for sufficient cooling air flow. Fortunately the necessary space wasn't so big that it compromised the size/usability of the motor. What are the other options for dealing with heat gain in a project like this?