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Michield99I built your engraver and everything works well. The only problem I have is that the grbl software will not accept positive X and Y numbers and all the software creating G code are creating X and Y coordonates that are positive I have proven that by creating a small drawing using inkscape and creating gcode using your engraver extension . The gcode was positive and the grbl was hanging up on it .I edited the gcode and added a negative sign to all the X and Y coordonates and the whole system liked that and burned the drawing perfectly. I am using grbl version 0.9 .do you know how to get around this issue ?Gerard t