As im building my CNC im trying to come up with ways to add in as many features as possible without needing allot of complex equipment. One feature I want is a blower to clear out the tool path as it cuts. I really don't want to fire up the air compressor every time I want to run the CNC so I thought, How about building a shroud that utilized the air blown off the router by the armature fins and channel that through a flexible tube and have that as my air supply for clearing the tool path. Sounds great but im sure this will cause the router to heat up much faster and cause premature failure. Then I thought this could easily be fixed by using a PC liquid cooling system to circulate water around the spindle. Again, sounds great but is this only in theory? Anyone attempted doing any spindle cooling with a non commercial liquid cooling system?