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12.4 Detecting the height difference between hot-ends.
The print-heads when activated it needs to work at the same height. Due to production tolerances the hot-ends are normally
slightly different in length. This difference must be calibrated.
When to do this calibration?
•
After changing one of the two hot-ends or nozzles.
•
When you notice that the first lines of material are noticeably different in thicknes
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 several of times
Then if routine finishes successfully, it will store the new calibration values
12.5 Adjusting the XY-distance between two hot-ends.
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 calibration?
•
After exchanging/servicing a hot-end
•
When adjacent features printed with both extruders do no not properly aligning.