Greetings everybody; I was working on the frame for my new z axis drive for that micro-mill, and have managed now to break off not one, but 2, 6-nc32 taps in the holes drilled into the edge of a piece of 1/4"x1.5" steel bar.
I now have the work insulated, a copper wire in the chuck bent to wobble about enough to cover the ends of the taps, and tried a 50 volt AC supply for about 20 minutes, but the transformers were way too puny and have already smoked. I have an air jet blowing on the work, and the wire running about 200 rpm. While it worked, I'd guess I got rid of 5 thou total, from the work and the electrode wire end, so its not gonna be exactly a 5 minute job unless I can get some more effective firepower into it. Figuring that DC, with a current limiter of sorts and a storage capacitor to hold more bang will probably work better, I've resigned myself to building it. The question then is, for an air quenched lashup, what is a suitable voltage, and a suitable current limit in terms of average milliamps, that I should try and build? Googleing doesn't seem to spit that sort of info out readily. -- 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) I prefer rogues to imbeciles because they sometimes take a rest. -- Alexandre Dumas, fils ------------------------------------------------------------------------- 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