Hey all
I’m looking at dust control for my 5 pro. I’m leaning heavy towards a 650 CFM collector w/an in line separator. I’ll be running the air cooled spindle; given how the spindle draws in air to cool itself my concern is a 650 CFM collector could hinder this. Thoughts?
I noticed on my SO3 with the air cooled spindle that when the bristles on the Sweepy get near the work surface you can hear the air speed up as it enters the top of the spindle.
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I dont have a C3D VFD but I would suspect that like the trim routers that the air flow is down to avoid sucking up dust into the VFD. So the DC would only speed up the air going through the VFD.
Dust collection is very critical on all CNC machines but the bigger and faster the more critical. Far beyond just the nuisance of dust in the shop is potential health issues from breathing in fine dust. Also secondarily is the fact that recutting chips and dust is not good for the health of your tools (bits). So dust collection is important for a variety of reasons. When implementing dust collection you must also incorporate static reduction strategy becausse hot air, moving air, and low humidity can generate a lot of static. I live in a high humidity environment in East Texas and yet static can still be generated. So plan on a static mitigating strategy from the beginning to avoid having to retrofit your system later.
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no it won’t have large dust collector on mine runs super cool all the time
If you have the right dust boot, any dust collection should help cooling as the air cooled spindle draws air from the top and exhausts down. Any air draw will help pull cooler air thru better.
Just make sure to keep the air channels clear. One time I had the spindle lock up on me. The cause ended up being that the air channels got clogged, it overheated, the bearings expanded past their tolerance, and that caused it to lock up. It was physically boiling to the touch. Once I determined that the ports were not moving air and cleaned them, it hasn’t had a single issue in the 2 years since. Runs cool now that I keep an eye on that. 
Note that the build-up was also because I used to run plastics without the dust boot. Now I always do.
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