http://groups.yahoo.com/group/mach1mach2cnc/ Mach1,Mach2 and Mach3 CNC Tue, 24 Nov 2009 02:30:06 GMT cncnovice http://groups.yahoo.com/group/mach1mach2cnc/message/115193 http://groups.yahoo.com/group/mach1mach2cnc/message/115193 T, The light bulb just went on. Of course there will be a difference. I keep thinking drilling - not milling. You have presented the group with a real Tue, 24 Nov 2009 01:24:02 GMT T http://groups.yahoo.com/group/mach1mach2cnc/message/115192 http://groups.yahoo.com/group/mach1mach2cnc/message/115192 I addressed this once already but we've posted to many messages maybe you missed it. "They are sopposed to be different. The top holes are 0.0980" OD and the Tue, 24 Nov 2009 01:05:05 GMT cncnovice http://groups.yahoo.com/group/mach1mach2cnc/message/115191 http://groups.yahoo.com/group/mach1mach2cnc/message/115191 T, I don't know why, but I do know from measuring your DXF file that your gcode X values are wrong (I did not check your Y values). The two do not match. Not Tue, 24 Nov 2009 00:39:38 GMT T http://groups.yahoo.com/group/mach1mach2cnc/message/115190 http://groups.yahoo.com/group/mach1mach2cnc/message/115190 I have tried the rapids lower on previous runs, the parts come out identical. I can move it back down though if I run some more tests. The machine is gaining Tue, 24 Nov 2009 00:24:39 GMT Stan Telus http://groups.yahoo.com/group/mach1mach2cnc/message/115189 http://groups.yahoo.com/group/mach1mach2cnc/message/115189 machine shops closing was his point you may find some shops selling some of their time for that rate, filler work, between jobs, I am unaware of any shops Tue, 24 Nov 2009 00:17:36 GMT Leslie Newell http://groups.yahoo.com/group/mach1mach2cnc/message/115188 http://groups.yahoo.com/group/mach1mach2cnc/message/115188 I know I keep on about this but did you reduce the rapid speed in motor tuning? For testing purposes, halve it. Your video description looks like the machine Mon, 23 Nov 2009 23:54:50 GMT williamweselyk http://groups.yahoo.com/group/mach1mach2cnc/message/115187 http://groups.yahoo.com/group/mach1mach2cnc/message/115187 T, If you changed screws and nuts there is a chance, that you now have the wrong # of steps set in your motor tuning. That's the only thing I can think of that Mon, 23 Nov 2009 23:52:26 GMT T http://groups.yahoo.com/group/mach1mach2cnc/message/115186 http://groups.yahoo.com/group/mach1mach2cnc/message/115186 I should have phrased that better, The machine is Gaining steps at the beginning, then loosing them back to right on. If you look at the picture 5617, you can Mon, 23 Nov 2009 23:47:20 GMT fortino tan http://groups.yahoo.com/group/mach1mach2cnc/message/115185 http://groups.yahoo.com/group/mach1mach2cnc/message/115185 Daniel, I agree with u, that number can't be right. If the machine shops runs that rate, soon the machine shops will closed. Fortino To: Mon, 23 Nov 2009 23:30:19 GMT T http://groups.yahoo.com/group/mach1mach2cnc/message/115184 http://groups.yahoo.com/group/mach1mach2cnc/message/115184 Ok I ran the test on what Les mentioned and wow I did get some interesting results. I have made a video explaining the whole thing. I took a couple pictures Mon, 23 Nov 2009 21:56:09 GMT James Connerton http://groups.yahoo.com/group/mach1mach2cnc/message/115183 http://groups.yahoo.com/group/mach1mach2cnc/message/115183 Hi Thomas/Les, On closer examination, I see I was incorrect in claiming the Gcode was in error.  The center point for the upper and lower 3hole groups do seem Mon, 23 Nov 2009 21:16:42 GMT Dr Mark Vaughan http://groups.yahoo.com/group/mach1mach2cnc/message/115182 http://groups.yahoo.com/group/mach1mach2cnc/message/115182 As Art says we are pretty sure this is a G100 issue. My mill has full 140V SEM servos with new commercial Norwin analogue drives (?1200) and pixie PID Mon, 23 Nov 2009 20:42:33 GMT williamweselyk http://groups.yahoo.com/group/mach1mach2cnc/message/115181 http://groups.yahoo.com/group/mach1mach2cnc/message/115181 Hi T, Doc Vaughan may be onto something, why don't you try Machs inch txt. post processer just to rule out arcs fouling position. Also, could you tell us how Mon, 23 Nov 2009 20:31:00 GMT art2 http://groups.yahoo.com/group/mach1mach2cnc/message/115180 http://groups.yahoo.com/group/mach1mach2cnc/message/115180 Hi MArk: Always good to question all aspects. But no, rounding cant contribute to this I dont think. Generally, you cant lose then gain steps to zero out. A Mon, 23 Nov 2009 20:27:08 GMT T http://groups.yahoo.com/group/mach1mach2cnc/message/115179 http://groups.yahoo.com/group/mach1mach2cnc/message/115179 I will do that after I finish lunch here. That sounds like a good plan. I will machine the same part and leave it mounted. Then jog back to home where the