On Tuesday 18 May 2010, Chris Radek wrote: >On Tue, May 18, 2010 at 04:48:57PM +0100, Andy Pugh wrote: >> As far as I can see the docs don't mention it at all, anywhere. Any >> pointers? > >We don't have much. The student who originally did the implementation >wrote this paper: > >http://timeguy.com/cradek-files/emc/Leto_art837759.pdf > >There is just a bit of gcode documentation in there. The format for >defining a NURBS (G5.2, G5.3) is shown starting at the bottom of page >4. > >The format for defining a quadratic b-spline is not in that document >and is G5.1, XY are the endpoint, IJ are incremental distance to >control point. > >Chris
All I can say at this point is WOW!! This looks as if a whole gunstock could be laid out and done on a gantry with a 4 foot X motion, Y motion maybe 8", and for an A (B?) rotary to turn the workpiece on the X axis, and with spindle tilts of + and - 75 degrees on the Y axis for reaching into the thumb hole both directions when the stock is rotated to present its sides to the YZ. And it may get me started at building such a beast if I get enough yeses below. But that leads to a whole books worth of questions. Assuming I use an updated to 8.04 LTS install with emc2.4 on top of that, is this functionality actually available today? Of course with my limited education, I got lost in the math, so can anyone give an overview of how this actually works? IOW, would it be possible to set intermediate points by hand, and view it in axis for that certain artistic aura of smoothly flowing curves? I'm licking my chops already. ;-) Thats enough for today, or even for a weeks worth of ruminations. -- 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) You have an unusual equipment for success. Be sure to use it properly. e ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
