Z Motor stand with 40 mm fan for CTC DIY i3 Pro

This motor support for z-axis combines cooling of the motor with a stabilizer for the CTC DIY i3 Pro.
You can mount a 40mm fan to cool the motor. Especially for a printer with heated build tank, the motor requires more airflow to avoid overheating.
The space for the motor is slightly (.4mm) larger than a nema17 to avoid post-processing.

There is a 8mm version like the original one of @spiritdude and a 7mm version fitting the gap on my printer.