I hate to pull the conversation down from its usual high level, but I have a basic, hopefully simple question about G-code and cutter compensation. I've been gnawing my way through Joe Martin's instructions / tutorial, and there's something I can't quite get my head around. I'm a visual thinker, so here's the "visual" model for my moment of ignorance.
Imagine I have a circle, 2.0" inches in diameter, a material blank that's 3" square, and a cutter (#1) that's 0.25" diameter. I can't figure out how the G-code should be arranged (using cutter comp) in the following two cases. Or more precisely, how would these two cases be different? I know that the tool table should indicate that tool 1 is .25" in diameter. a) I want to cut a 2" circular pocket in the center of of the blank. b) I want to cut away the outside edges of the blank, leaving a 2" circular boss in the center. I understand how one would use G2 to cut a circle with a 2" centerline, without regard for cutter diameter. I can imagine how "right" and "left" apply when one is cutting straight lines. But on a circle, "right" seems to change into "left" when you get halfway around the circle!!! It seems like I need to say "interior of line" versus "exterior of line". Please, someone send a flash of light to illuminate my moment of ignorance. Thanks! - Marty Swartz -- Sherline 5400 Gecko G540 EMC2 over Hardy Heron ------------------------------------------------------------------------------ Create and Deploy Rich Internet Apps outside the browser with Adobe(R)AIR(TM) software. With Adobe AIR, Ajax developers can use existing skills and code to build responsive, highly engaging applications that combine the power of local resources and data with the reach of the web. Download the Adobe AIR SDK and Ajax docs to start building applications today-http://p.sf.net/sfu/adobe-com _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
