Fan adapter for Rostock Max v2 to use BD5015 radial fan

I changed up the original fan adapter from http://repables.com/r/212/ to take a BD5015 radial fan because the original 30x30x10 fan is not available in Europe.

I strongly recommend using radial fans when you are using a fan duct, because a radial fan can exert a much higher static pressure than an axial fan. So in return the airflow will be higher, even if an axial fan has a higher nominal air flow. I have added the datasheet for characteristic curves .

With the fan at full, the hot end o