Greetings all; Despite the entreaty's to get a stepper driven model, whose minimum stepper size was a 42, and cost anywhere from $75 to $300 more than the toy size PMDC on fleabay, I have it working fairly well. I have a set of nested brass tubes, so I cut 2 that fit the ID of the nozzle and pressed them in flush with the end of the adjustable brass nut of a $11 coolant nozzle kit. Then took the center tip loose, chucked it in an ER42 collet and shaved the OD until it fit but wouldn't come thru the slightly reduced diameter, by the cutting forces at the tip end. So I now have an air adjustment that will almost shut off completely.
With an xor for on-off of a timedelay and two adjuster buttons from pyvcp, one to set the on time and one to set the off time or repeat speed, I can bang the motor on for 3 ms, and repeat at 100+ ms up to half a second, I have more than sufficient coolant being delivered to the tool w/o flooding the area and wasting coolant. This allowed the air pressure to the air valve to raised far enough for reliable operation of that electric valve without burning up the air compressor. 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) 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
