Hi Gene, Paraffin oil aka lamp oil is pretty close to EDM dielectric. Using 70 -90 V for your DC supply and something on the order of 10 uf with a resistor in the 20-50 ohm range should get you an RC circuit that will be close. A bit if component substitution will get you to an acceptable combination. The electrode really doesn't have to rotate, just pick one a bit larger than the core of your tap; erode out the center and tip the outside pieces in. It works like a charm. The higher voltage will make the gap adjustment much less critical.
HTH Dave On Aug 20, 2007, at 2:26 PM, Gene Heskett wrote: > On Monday 20 August 2007, Jack Ensor wrote: >> Gene - I think that if you were to build a dam around the part with >> modeling clay and fill with kerosene might help speed things up. >> Keep >> in mind that kero is flammable so take care. Just my 2 cents worth - >> I've never done it. > > I'm using cutting oil, and I've got to get some modeling clay yet, > tonight, > long johns is calling right now... Also, more voltage, 25 is too > critical. > >> >> By the way, I submitted an article to "Digital Machining" >> describing my >> stepper motor resonance damper. Don't know when or if it gets >> published >> at this point. >> > Yeah, I built some of those, they worked great! Thanks. My z can > now go 37ipm > both ways. > > -- > 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) > All his life he has looked away... to the horizon, to the sky, > to the future. Never his mind on where he was, on what he was doing. > -- Yoda > > ---------------------------------------------------------------------- > --- > This SF.net email is sponsored by: Splunk Inc. > Still grepping through log files to find problems? Stop. > Now Search log events and configuration files using AJAX and a > browser. > Download your FREE copy of Splunk now >> http://get.splunk.com/ > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
