Thanks to all who have replied. Apparently I have missed some replies from several people so my apologies if my replies have sounded weird. We are certainly on the same page as to what I want to build. The custom kinematics is bending my brain a bit.Thoughts on where to start? Thanks Dan
On Fri, Jan 2, 2015 at 2:04 PM, TJoseph Powderly <tjt...@gmail.com> wrote: > On 01/02/2015 12:10 PM, John Kasunich wrote: > > > > > > On Fri, Jan 2, 2015, at 01:03 PM, andy pugh wrote: > >> On 2 January 2015 at 17:58, John Kasunich <jmkasun...@fastmail.fm> > wrote: > >>> Also, I have a simple mechanical question: How is the cutting wire > >>> kept tight? Cable bipods don't have any ability to resist tension > >>> perpendicular to their plane. > >> > >> The archetypical version uses a wooden C-frame to tension and weight > the wire: > >> http://www.cnc-hotwire.de > >> > > > > In that case, you only have the errors caused by the controlled point(s) > moving > > out-of-plane when the cutting wire is tilted. Small for modest tilts, > but increasing > > rapidly with angle. Dan mentioned angles up to 22.5 degrees. > > > > If one controlled point could be constrained in all three directions, > then the kins > > to compute the location of the other controlled point (and all four > bipod cable > > lengths) are relatively straightforward. > > > > > re hotwire foam cutter xyuv like wedm stuff > our german friend left for the forest and took down most of his videos > but heres some info on his implementation > i saw videos of the two xy pairs in motion > he was magic33de or ??? in the irc ichgoodlive?? > he mad a boatload of linuxcnc videos and tutorials > https://code.google.com/p/emc2hotwinch/ > hth > tomp tjtr33 > > > ------------------------------------------------------------------------------ > Dive into the World of Parallel Programming! The Go Parallel Website, > sponsored by Intel and developed in partnership with Slashdot Media, is > your > hub for all things parallel software development, from weekly thought > leadership blogs to news, videos, case studies, tutorials and more. Take a > look and join the conversation now. http://goparallel.sourceforge.net > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
