====== What do I need to do after I swap the nozzle or hotend? ======
{{tag> setup howto faq}}

==== If you changed the whole tool head or the extruder or extruder gears... ====

Be sure to [[tune_extruder_rotational_distance|tune extruder rotational distance]] before any other tuning or calibrations. 

====== Tools ======

  * angled 6mm socket (or size of your nozzle 
  * pair of large needle nose pliers


===== To swap the nozzle ======

Heat to 20C degrees hotter than your usual extrusion temperatures. 

===== Things to do =====

An //ordered// list

  - PID Tune
  - calibrate probe z offset
  - adjust slicer layer heights and line widths if you changed the nozzle size. 
  - set gcode z offset
  - calibrate flow ratio
  - calibrate pressure advance
  - calibrate extrusion temperature
  - calibrate max volumetric flow rate