I'm setting up my new CNC lathe. I did not invest in high pressure coolant, so I'm limited to about 30 PSI. For all of my external turning and facing, flood coolant will be great. But, is there any value in trying to introduce coolant through boring bars, drills and parting tools with only 30 PSI? Obviously it won't shock the chips or even break through the steam boundary layer, but is the focused flow worth something at least for lubrication and chip flushing? Has anybody done this? Results?