My lab is small and I have to share the room with my compressor .So when i'm milling I have to wear headphones. (I generally mill less than two hours a day) I have a couple of jun-Air double head compressors that are sient that I would love to be able to use for milling . I can work around the 15min on 15min off cycle but my concern is the oil vapor and particulates that will get through to the mill. So ,,,,,what could I use to trap the oil that's in the air . Anyone out there who uses oil compressors for the mill . Are these oil traps effective and or a pain to maintain( how often to empty them)?. What type of filters do you use ? Many thanks for any help with this .