Felix printers Pro L Quick Start Manual page 24

1.1.7 Detecting the height difference between the two hot-ends. (automated)
The extruders must operate at the same height. Due to production tolerances and rotating mechanism of the right extruder, this
has to be calibrated. The printer will do this in an automated way.
When to do this calibration?
After changing one of the two hot-ends or nozzles.
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When you see the first purge lines are significantly different in thickness.
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The extruder height calibration routine performs the following:
1. The hot-ends heat up to 185 ˚C.
2. The printer homes all axes.
3. The extruder moves to a certain position and probes both extruders a couple of times.
1.1.8 Adjusting the x, y distance between two hot-ends. (assisted)
The distance between two extruders need to be calibrated properly in order for a dual head print to successfully finish. If this is not
done properly printed lines from both extruders might overlap too much and cause a printed failure.
When to do this?
After exchanging/servicing a hot-end
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When adjacent features printed with both extruders are not properly aligned
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Quick Start Guide FELIX Pro L / XL
Page 23