On Friday 20 November 2009, Ian W. Wright wrote: >Gene, > >Can't imagine why you'd want to stand in an inch of water to >soften brass ;-}
The cartridge case, not me obviously. ;) >You answered your own question really - just get it hot and >leave it - it will be soft. Better still, use copper. No copper available at that gittin place. But, next time I go to the old transmitter, I recall there are some failed thermometers as it monitored the water temps with dial thermometers with remote bulbs, that capillary tube would make a decent piece of raw material. And it is copper. >Now, needle valves - think laterally - where are they used - >carburettors.... True, but in small engines you have to find one 20-40 years old now since the EPA got into the regulating business, they are all fixed jets now, and usually too damned lean, and plugged up tight by corrosion after sitting dry for the winter so they get to sell you a new $50 one come spring. But its a thought I'll keep in mind. >do you have an old carburettor hanging >about or, better still, an old model aero engine which will >have a needle valve in a bit of brass tube for a carburettor >- strip it out and mount it crosswise in your bigger brass >tube and you have a ready made atomiser.. I don't believe we need that fine an atomizer, that is how we would load the breathing air up. I think the idea here seems to be the injection directly into the center of the air stream, of a small amount that eventually becomes a big enough droplet hanging off the end of the tube so that it gets carried away in larger droplets that are ballisticly delivered to the work/mill interface, about a 1.25" distance with the way I have it mounted.. So the work stays wet, without a lot of it hanging in the air. Air pressures are in the 15-50 psi range, just enough to blow most of the chips away when they are sticky with the oil. The air jet is formed by the clearance between the OD of the 1/16" tube, and a 5/64" hole the tube is projecting through, by about 1/16". The small tubes end then is in the center of this air stream and is apparently subjected to a slight siphoning vacuum although I haven't tried to measure it. In any event, the oil reservoir has the same pressure in it as the air flows through it, functioning as a filter of sorts, and the oil exits its screw-on bowl via the drain fitting on the bottom. Heavy duty flow restriction required else it will dump the bowls contents onto the mill and workpiece in a second or so after air pressure is applied. Un-screw the bowl to add oil. So far the hose barb has slipped in the hose as the bowl is rotated, but I suspect I'll have to find some mini-clamps to keep it from blowing off under pressure eventually. Thanks Ian. -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) The NRA is offering FREE Associate memberships to anyone who wants them. <https://www.nrahq.org/nrabonus/accept-membership.asp> knowledge, n.: Things you believe. ------------------------------------------------------------------------------ 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
