Gene Heskett wrote: > > Understood. In playing tonight with 25 volts & probably 100 ma average, I > found that spinning the electrode at around 1k rpms seemed to add enough > agitation to the oil that I could use it all up and go about 30 thou before I > had to vacuum it out and refresh it, with about 1/2 cc in a modeling clay dam > around the hole. A 100 rpm spin would short in just a thou or two. That is way too low a current for any serious metal removal. You want at least an amp, and it will still be really slow. You need an insanely fine feed. I have .000025" per encoder count on the Z axis of my mill, so I could get a pretty slow feed, about .0001" every second. It still took all evening to burn out one tap. I think with a hollow electrode with a drip feed scheme through the electrode it would go a lot faster.
The alum-tap is a really light fluid, maybe just a little higher viscosity that water. It worked MUCH better than #20 oil, which I also tried. Try a couple different fluids to see what works best, it makes a big difference. Jon ------------------------------------------------------------------------- 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
