On Friday, June 01, 2012 06:18:41 PM Greg Bernard did opine: > Gene- > You could hold your stock down easily with super glue and then use > acetone to release it like this: > http://millpcbs.com/index.php?option=com_content&view=article&id=19&Ite > mid=63 .
I personally have not had that great an experience at getting superglue to let go with acetone. Once set by the moisture in my skin, a stuck fingertip is half an hours work. And required far more effort than this .018" thin alu could stand without bending it up pretty good. I did get the 60 slot wheel done, but its not possible to have 60 slots AND a slot narrow enough for a 50% duty cycle output. And despite a freshly done backlash adjustment for xy, I find this teensie bit wanting to crawl in the direction of the side that is cutting, at feedrates of 4 to 6" and .0015 DOC. So I've restarted it after the first .014 down with a feedrate of .7. Properties says it now has a 909 minute runtime, but it is gradually straightening out the S curve in what is supposed to be a straight line. Dig cutting, if that doesn't fix it, I go to climb cutting I guess. John T.: I did a short pass with your code, cutting 2 slots. Feed way too fast, the slots were badly S shaped from bit flex. It sure looked like a good idea though. Thanks. Running a .7" feedrate, it is gradually straightening out the bottoms of the slots. I also went down to a 45 cycle wheel with the narrowest slot for the one under construction now, but my calipers are telling me I'll have to pull the opto's together by at least 50 thou to get good quadrature. Dunno if I can bend then that far or not. We'll see when this one is done. I'll see what the duty cycle is as I'd druther go up than down. Here is a strange observance though, in halscope, encoder.0.velocity is not responding to spindle rotation at all until the spindle is up to at least 1.5 to 2 rps! Below that, nothing at any gain. Weirdsville. I don't recall buying a ticket to this sideshow. ;) 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) My web page: <http://coyoteden.dyndns-free.com:85/gene> The more complex the mind, the greater the need for the simplicity of play. -- Kirk, "Shore Leave", stardate 3025.8 ------------------------------------------------------------------------------ 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
