When using axis substitution in X3 to engrave letters and the toolpath is posted the NC is inverted (using Mach3 for control), if I mirror the geo in X3 then the NC is proper when posted. If I leave the letters flat ie. turn off the axis sub the letters will be correct when posted. They are only inverted when using axis sub. Does anyone know what setting I am missing here, (I think it is in the post).