Adjustable Cooling fan, grill, cover. Air flow limiter. CTC

With the CTC machine only have an off/on cooling fan and other mods damaging the main board, I thought I would approach this problem differently as some materials require less than 100% cooling. This fan shroud simply slips over any 40mm fan frame, you limit the amount of air the fan can pull, therefore ranging the cooling effect by turning the cover, opening more or less of an opening. If you require 100% simply pull the shroud off.

Warning. Using the fan with the cover completely closed can