I always got the ultra fine dust into the cabinet. I did not have a problem with that. But cleaning is risky. Static can ruin things, and a blow with the vacuum nozzle can knock out little cable.
I ended up buying a $90 AC from home depot, closed it completely, and mounted that to the back of my cabinet. Cold inside and no way for dust to get in.

Commercial systems have commercial AC units which do not look as ghetto as my attachment. But they do the same thing and I bet they got the same inards as well.
One day I make a sheet metal enclosure of the AC unit in the bacl. So it looks expensive... haha
Lemo

KentCNC Is there an alternate way to get hold of this guy?  I have been trying by email the one he posted but no reply?  Wondering if it is a valid email address today? 

Are you using KentCNC@gmail.com ?

http://www.cnczone.com/forums/showthread.php?t=97533

Yes I was but did finally get hm  I have the shoe ordered now will be here soon.  Thanks