I was looking at misters too once, and it seems the general feeling is it's fine if you're happy to have everything in the workshop coated with oil in a few months.
If making a mister, why not just 'mist' oil directly, without the air? Like those 'airless' spray guns. Unless the air blast is a necessary part of the cooling. Just reading another article; - highest smoke point looks to be Avacado oil 520°F/270°C and elswhere; "Whale oil was once heavily used in the U.S. for lamp oil and lubricants but not for cooking. The Inuit do use whale oil for cooking as an alternative for Seal Oil <http://www.clovegarden.com/ingred/oils.html#seal>. Oil from sperm whales (actually a liquid wax) is still the best oil for some precision lubrication applications but is now generally illegal due to the endangered status of whales (the last sperm oil company in the U.S. closed in 1978). Jojoba Oil <http://www.clovegarden.com/ingred/oils.html#jojoba> is the only satisfactory alternative for whale oil lubricants." Roland 2009/11/16 Dave <e...@dc9.tzo.com> > Misters bother me.... unless they are tuned just so you can put a big > cloud in your shop in no time. > > Flood coolant might be messy also but it doesn't fog your shop and your > lungs. > > There is some mention of people trying to use food oils on > practicalmachinist.com and the residue drying to a sticky mess. > > http://www.practicalmachinist.com/vb/showthread.php/cold-air-gun-vs-162714p3.html > > You might want take a sample of the mister oil you want to use and let > it sit on a surface for a while and dry and see what you have afterwards. > > I've done some work in a heat treat facility where they quench hot parts > with various fluids and the fumes and mist in that place is really bad. > Everything becomes sticky or oily. > I'd be careful not to recreate that scene in the space around your > machine! > > I use propylene glycol (aka pink RV antifreeze - you can drink the stuff > in small quantities) in my bandsaw as a flood coolant and it works > great. It doesn't get sticky, it doesn't freeze, and it has a > corrosion inhibitor in it. $2.50/gallon in the fall when everyone puts > it on sale. > > Dave > > dave wrote: > > On Mon, 2009-11-16 at 08:11 -0500, Gene Heskett wrote: > > > >> On Monday 16 November 2009, Leslie Newell wrote: > >> > >>> From past experiences with IC radio controlled models, this is a > >>> definite drawback to castor oil. > >>> > >>> Les > >>> > >>> Ian W. Wright wrote: > >>> > >>>> There's good reason not to want castor oil mist spraying > >>>> about too much - those first world war fighter aces were > >>>> never constipated breathing in all the castor oil fumes > >>>> coming from their engines - and the brown underpants were > >>>> not always a result of clashes with the enemy!! ;-} > >>>> > >> Since the grocery stores are stocked to overflowing with several sorts > of > >> 'vegetable' cooking oils, like olive, corn, soybean, safflower, peanut, > even > >> cottonseed or rapeseed, are any of these suitable? > >> > >> Most are cheaper than olive by wide margins. And many are even cheaper > than > >> ACE Hdwe's cutting oil, as its about $7/qt. > >> > > > > Simply pick an oil with a high smoke point and have at it. > > > > http://en.wikipedia.org/wiki/Cooking_oil > > > > has a good table of smoke points; some are over 500 F. :-) > > > > The point about not using castor oil is a good one. > > > > I wonder about forming the small hole in the mister by simply squeezing > > the brass tubing around a small mandrel like in forged rifle barrels. > > > > I hope you are not seeing rapeseed being sold for human consumption. By > > definition rapeseed is high in euric acid ( C22:1) and NOT heart > > healthy. Canola is the result of seed breeding programs to produce a low > > euric acid, low glucosinolate rapeseed. Canola is a trademark > > (Canada .... and ola (oil). However the Canadians were nice enough to > > let everyone use the name. Glucosinolates are the hots in mustards but > > when present in the rapeseed meal have anti-nutritional value in animal > > feeds. Fouls up the thyroid I think. With a low-low rapeseed everyone > > gains. You get an excellent cooking oil high in mono-unsaturateds and a > > high protein byproduct suitable for animal feed. > > > > I suspect that the 'stick' machining lubes that were popular a few years > > ago are simply a soap made from whatever oil happens to be cheap. > > > > > > Dave > > > > > > > > > > > > > ------------------------------------------------------------------------------ > > 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 > ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. 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