On 7/12/2012 3:15 PM, Chris Radek wrote: > On Thu, Jul 12, 2012 at 02:25:48PM -0400, Kenneth Lerman wrote: >> I understand that you are "...not very worried about a couple of counts >> every 75mm." It would be nice to have a cleaner solution. > I didn't want to harp on it... but I would want to determine > whether the error was cumulative or not. I even agree that 2um is > nothing, but several 2um errors that accumulate every time you rapid > across the table makes it totally unusable. If you drill a few > hundred holes in a circuit board, and the last ones are off my a mm > or two, well, it's not going to be a usable board. > >> On the other hand, "There are things worth doing that aren't worth doing >> right." This might be one of them. >> (Particularly since I haven't seen a "right" solution.) > The "right" solution is to use one long track and one read head. If > you want the track on the carriage so there are no moving wires, so be > it - it will stick out past the ends of travel. Protecting those > sticky-out parts would not be rocket science...? Not as pretty, but > it would have the advantage of working correctly. Is the track flexible? If so, could it be looped around a pulley at each end?
Ken > > Chris > > > ------------------------------------------------------------------------------ > 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
