Hi Gene, I've been following the thread you started on a mister for a small mill. I can't advise you on making your own, but I can recommend that you just buy one. The systems I have here in my shop are made by Kool Mist. Hands down they are the best. I never buy mine new, but I find them on Ebay. They come up regularly, and I don't think I've ever paid more than $10 for a single head unit. This is the unit I'm talking about. I think it would be perfect for a small mill:
http://www.koolmist.com/images/products/560-18-big.jpg I machine a lot of stainless steel, so I use the #77 Kool Mist coolant. I buy it by the gallon from Enco, and you mix it 4 ounces of coolant to one gallon of water. Here is a link to the coolant: http://www.use-enco.com/CGI/INSRIT?PMAKA=505-2076&PMPXNO=947353&PARTPG=INLMK3 I have no idea why some of you on this list are having trouble with using misters. I typically adjust mine so the air stream is very gentle, and the mist is barely visible. I use my finger in front of the nozzle to make sure coolant is coming out. Tiny droplets will form on the surface of where you are machining that lets me know the coolant is coming out. They are super easy to adjust. Typically I can machine for about 12 hours on one gallon of mix. Also, my machine shop is a very tight air-space wise because I live in a cold climate, and I don't want to pay a lot for heating (when it's below freezing outside, my gas bill is usually only about $34 a month to keep it at 69 degrees inside. I work in 940 square feet). I never get the fogging some of you talk about, and my machines are always dry and clean. This stuff does not spread itself around the shop and make a mess. Before I started using the misters, my tooling costs where much higher. They are not a replacement for true flood systems, but for an open machine (no splash guards), these little units really work great. I do not work for Kool Mist. I just think you should pick one up and use it. You will not be sorry. David, (a machinist who has been cranking handles now for over 35 years) 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
