good point i was an applications engineer and i used that trick sometimes you have to think well tho
(it dont always work like you think) i always akin it to 'smoke goes up the chimney' and 'dont blow down the chimney' often the heat rise will aid the upwards flow and the swarf contained in the fluid sometimes there's just too much stuff clogging the chimney ( the space between the tool and the cavity) and sometimes the dirt is formed too deep for natural convection to clean so use flush, use jump, use ultrasonic vibration to loosen and keep the dirt in suspension sometimes thicker oils sometimes thinner sometimes upside down is good, did you know the hydrogen gas bubbles would rise into the now inverted cavity? gues what hapens when you spark into hydrogen ;-) (oil is a hydrocarbon, the electrical energy _cracks_ it, the carbon (you see 'dirt') and the hydrogen (you see smoke ) one method is not suitable to all cuts so, form a picture of whats happening, test that picture every day tomp tjtr33 On 02/12/17 11:43, Ralph Stirling wrote: > I've got a question for you, TomP. Why aren't sinker edm systems operated in > an inverted fashion, with the work facing down and the electrode underneath > facing upward? I would think gravity could then help clear debris out of the > hole. > > -- Ralph > > On Feb 11, 2017 2:35 AM, TJoseph Powderly <tjt...@gmail.com> wrote: > > > On 02/11/17 17:15, Andy Pugh wrote: >>> On 10 Feb 2017, at 22:42, Jim Craig <jimcraig5...@windstream.net> wrote: >>> >>> Seriously though, lasers are expensive. I actually considered lasers >>> first and went back to a regular spindle. >> Also, going back to something else mentioned here, ECM might work. It might >> be especially effective if the geometry allows several holes to be made at >> the same time. > true, less burr also > less volts, more amps > kind of like de-plating > use carbide tube ( you can get a round hole by rotating or using carbide > tubes ---old skool rule ) > a jig plate could do several at once. so the precision can be quite high > still requires gap-width controller > tomp > >> ------------------------------------------------------------------------------ >> Check out the vibrant tech community on one of the world's most >> engaging tech sites, SlashDot.org! http://sdm.link/slashdot >> _______________________________________________ >> Emc-users mailing list >> Emc-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/emc-users > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, SlashDot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, SlashDot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
