Hi Cicio
I'm not an expert on Mach3 but I'm pretty sure you cannot open a dxf file directly in Mach3. You will need to open it in SheetCam (or another CAM program) and create a gcode file then load that into Mach3.
LazyCam (Mach3's free cam program) can import dxf's and then create gcode.
Try and download LazyCam here;
http://www.machsupport.com/artsoft/d.../downloads.htm
Not too sure if the latest version is compatible with your older version of Mach3.
Just remember the basic steps to CNCing;
1. Design your work in a CAD or Drawing Package
2. Use a CAM program to convert the drawing to gcode
3. Load the gcode into Mach3 and run the job
Cheers,
Claudio
- WidgitMaster Wide Router with Kress FME 800, HobbyCNC 305oz Stepper Kit
- WidgitMaster Midi Router with Dremel