Gentle persons: Several items were called out recently as being show stoppers for LinuxCNC. I do not aspire to learn the inner workings of LinuxCNC well enough to contribute to discussion of the first item, "No jog on feedhold".
However, the second item "Taper thread pitches are measured along the hypotenuse ???" is an issue I think this bear of limited brain ought to be able to understand without being a LinuxCNC guru. At best I'm a dilettante with machine tools and certainly I'm no expert with a lathe. That not withstanding, long, long ago, I was taught to cut a tapered thread on a manual lathe by shifting the tailstock over. It seems to me this would necessarily mean the thread pitch was measured "along the hypotenuse" since the line of motion of the saddle is parallel to that hypotenuse. Not being able to imagine (I said limited brain, remember) how else they cut tapered threads on a lathe in the old days, I expect the standard specifications (ASME B1.20.1, fer instance) of the times would reflect this. Fast forward to today. I can't imagine that the standard specifications would have been rewritten just because CNC machining has been introduced. Unfortunately, ASME wants me to pay 21USD for the privilege of obtaining and reading B1.20.1 and I'd rather buy groceries for dinner than own an ASME specification. Could someone please enlighten me? Regards, Kent ------------------------------------------------------------------------------ Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
