I have had no problem importing dxf and posting Sheetcam (tap) then running it in Mach3. Now I been notes it's been taking longer to load Gcode in Mach3 and not cutting as clean as before. So I zoomed in on the drawing in Mach3 and the drawing is stacked up in the Z axes in a spiral. I don't know I did different.
Hope someone can help me Thanks Jay