Sometimes milling in the opposite direction will help.Rough one direction then put in a finish pass in the other. Looking at your code I see you have a G2.Unless this is plastic or something really gummy you should be using G3 for ID work.Or you are using left handed mills. Climb milling is the way to do most everything.
Terry ----- Original Message ----- From: dave <dengv...@charter.net> To: Enhanced Machine Controller (EMC) <emc-users@lists.sourceforge.net> Cc: Sent: Tuesday, September 25, 2012 3:08 PM Subject: Re: [Emc-users] Helical interpolation not quite round, WTF? On Tue, 2012-09-25 at 15:13 -0400, Stephen Dubovsky wrote: > How big are the "humps"? How many are there? > > Are you in exact stop mode? If motion stops at the beginning/end of > each semicircle then you will get a little hump from springback during > the pause. Lead-in & out are typ used when cutting IDs to prevent > that. > > Stephen > Ah! Both good questions I should have been smart enough to ask. Since my mill is not as stiff as would be ideal I tend to take small Z increments/360 degrees and work my way down taking at least an extra pass or two at the max depth as spring passes. To extend Stephen's question: where are the humps, exactly at 0, 90, 180 & 270 or offset some. Are they deep enough to not be backlash anomalies? Dave > ------------------------------------------------------------------------------ > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. Discussions > will include endpoint security, mobile security and the latest in malware > threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
