Drywall CD profile mounting/leveling aid

My own holder, alignment assistant, for CD profile (60 mm) for a drywall ceiling. Unlike others, it can be used with a simple spirit level when you don't have an alignment laser available. 3D print assembly instructions: you need 2 x standard-size M6 nut and 2 x 20 mm long M6 bolt the print profile includes a pause at layer 306, at which point carefully remove both nut holders from the print bed carefully insert the nuts into the respective holes and secure them with the holder (make sure the holder is pushed all the way in) be very carefull not to move the model or the bed in any way continue printing insert the nut insert the nut holder push the nut holder