I'm looking for a recommendation on a coolant system for A BP II CNC Knee Mill.
* I don't particularly like the idea of a mister as I don't want to be inhaling the mist.
* The flood type seems like it will be a mess and I have read that it gets all over the shop also. I would be willing to build a short Plexi cage around the table to catch the oil. This strikes me as the best coolant method, especially for CNC setups.
* Just Air. This blows away the chips and it cools the end mill. Although I'm not sure it cools enough
* It would be nice if I could turn it off and on via CNC control.
I would just rather buy some affordable system rather than make my own, although I would consider the DIY approach if there are no low cost options.
I have a very similar mill. I use a very heavy mist. Its about as good as flood without the mess. And this unit doesn't fog the room. After years of using the inexpensive air misters, I got very sensitive to the fog.
I cannot get a picture until the weekend at the earliest. It is a small 110V pump in the bottom of a 5 gsl bucket. The drain from my table goes into the bucket, through a screen and then recirculates. I have the normal flexy plastic nozzle which is screwed to the side of the head and plumbed to the pump. The coolant I use is the cheap stuff mcmaster sells, not sure the brand, etc.
One thing, this guy mentions how mist cooling is only 90% as effective as flood coolant. Given the minor amount of coolant with this no-fog approach, it must be much less effective also?
This no-fog sprayer is better than a mister because it uses more coolant, large droplets. You're certainly not up to the high pressure high volume flood coolant used in enclosed machining centers. But, I really like not have the full enclosure.