On Tuesday 09 November 2021 13:03:28 John Dammeyer wrote: > Thanks Stuart, > They have several different types. I thought maybe you still had the > original container. No problem. Almost finished my mist coolant > system. Should be installed this weekend I hope. I'll start with > that. > John > I'll play buttinsky here John. Finding a low volume valve or pump is a problem, so I went looking for a cheap "Peristaltic" pump on fleabay, like the ones that'r inside all that fancy plastic on a stand that tick along driving an IV hanging above a hospital bed. And found one at about a tenner a copy. Knowing how they work, and their failure rate I bought 4 so's I'd have spares. But running on 12 volts, its about 1000 times too fast, so I cobbled up a retriggerable oneshot in hal and made on and off cycle timing controlled by a couple pyvcp sliders, so it now gets about a 5 millisecond pulse at 5 to 20 times a second ejecting less than a drop of dilute kool-mist per pulse. Running smoothly, it uses about 2 oz of stuff an hour. Even that dry, its magic while carving alu with a 3mm 3 flute SC uncoated mill at 15k rpms. And 2 years later I'm still running on the first one. I've a sintered bronze weed eater fuel filter in the 8oz plastic coke bottle reservoir hanging on the side of the 6040 gantry thats slowly turning black but that has not affected the flow, yet. I also have an air horn valve rigged so its enabled by the mist button, and a pressure regulator set for about 2 lbs feeding air to the mister. But that duty is hard on the shop compressor so I'm about to put a small diaphram pump from a defunct soldering station on it for the air supply. Worse, I found and bought a round tuit coffee cup but it hasn't helped. Too many other hobbies I guess. ;o)
Cheers, Gene Heskett. -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author, 1940) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
