I'm making some shafts on the lathe using HSS cutting tools. Got tired of standing there with a brush or an oil can which provides either too much or too little cutting oil. Decided to get a setup for directing cutting oil onto the work. But I didn't like the prices for a purpose built tank and pump, or the idea of yet another gizmo to be plugged in and maintained. So I rigged this thing up using a Harbor Freight air tank ($19), a Grizzly magnetic oil stand ($35) and some fittings for an adapter. The adapter I made up has a hose barb on both ends. One end is for a feed tube inside the tank and the other end is for an output tube leading to the oil dispenser. I put about a gallon of cutting oil in the air tank, and installed the adapter (with a bolt taped to the feed line to keep it on the bottom of the tank). I pressurized the tank to a few pounds, and there you are - a very precise amount of oil delivered to the working point. The whole setup can be easily moved to the drill press or milling machine as needed. I keep the tank underneath the lathe on a shelf out of the way, but for the photo I set it up with a short piece of tubing just to show how everything fits together. It seems to last a long time on one pressurization, presumably because the volume of oil dispensed is small compared to the volume of pressurized air in the tank.