i have 2 dxf files that need to be milled to out and whenever i load them i get an error stating that it cannot be milled because the thickness is 0.00000, each part needs to be milled out of 3/4 inch wood, i have even made a Gcode file with all of the correct cut depths and peices set out but i cannot figure how to import the gcode directly into the machine, or can somebody help me convert my gcode back into a DXF file with the proper depths so the machine can interpret them?