If it's organic, it's bound to be Castor oil, an excellent lubricant. Because it gums up over time, you could just let it go to drain.
http://www3.towerhobbies.com/cgi-bin/WTI0001P?I=LXS627&P=8 Roland 2009/11/15 Leslie Newell <les.new...@fastmail.co.uk> > Here is how I did it. I took a short piece of brass bar and drilled most > of the way through with a drill slightly bigger than the smallest tube I > could easily obtain. This creates the air jet. I then drilled the rest > of the way with a drill the same size as the tube. Next I drilled > diagonally in from the back to allow air to pass around the oil pipe to > the air jet. The small tube is pushed right through and soldered in > place. It projects about 1mm past the end of the jet. The whole lot is > then pressed into the plastic nozzle on one of those cheap loc-line > hoses. A small plastic pipe runs from the small tube in the jet, down > the loc-line and out of a made-up block at the bottom. It sounds more > complicated than it is. > > I found the trick is to make sure the pipe down the middle projects past > the end of the air nozzle. This way you get a stream of fine droplets in > a cylinder of fast moving air. If the oil pipe is flush with the air > outlet you get a fine mist that hangs in the air rather than going on > the work. > > Note that I use a pressurized oil feed as this setup doesn't generate > much vacuum. The pressurized oil is supplied with one of those cheap > combined air regulator/filter and oiler units on eBay like item > #250528218868. I took out the air filter bits and added a pipe fitting > on the bottom of the water trap. The water trap now becomes the oil > reservoir. The reservoir is only small but it lasts quite a long time as > you only need a trace of oil. > > It pays to use oil designed for misters as it is less toxic than the > usual cutting oils. The stuff I use is vegetable oil based and a gallon > was damn expensive. However it will last many years. > > Les > > > > I used the smallest tube I could find. > > Gene Heskett wrote: > > Greetings all; > > > > I find that I can get brass tubing in pretty small sizes, like 1/16" OD, > > usually sized to be a slip fit in the next larger size, so this makes it > easy > > to solder up a small nozzle, with the far end built up to 1/4" for > attaching > > the air supply. > > > > Now, I'm wondering if there is a standard formula that would tell me the > > exact geometry it would take to make a 2 tube, one blowing across the end > of > > the other with air, and the second pulling from a nearby quart of cutting > > oil, in the same manner as the old hand pumped Hudson sprayers, to add a > > slight mist of cutting oil to the air blowing on the mill? Angles, > center > > separations etc? I think I can just solder the tubing(s) to another > small > > piece of sheet brass to maintain the alignment. > > > > > ------------------------------------------------------------------------------ > Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day > trial. Simplify your report design, integration and deployment - and focus > on > what you do best, core application coding. Discover what's new with > Crystal Reports now. http://p.sf.net/sfu/bobj-july > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
