LeapFrog 3d printer Manual page 66

Manual Leapfrog Creatr
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Changing the distance between the bearing and the driver gear
If none of the above has proven to be a solution, you can check if the distance between the driver
gear and the bearing of the extruder is set correctly.
In order to determine this, you will have to extrude some filament and then retract the filament.
If the bearing is too far away from the driver gear you will hardly see any marks on your retracted
filament. If this is the case, you will need to change the distance between the driver gear and the
bearing.
If the gear is a little bit too close to the driver, your filament will be deformed too much (see the
figure below). This causes the filament to be unable to pass through the hot end properly and it
will jam. The following description explains how to change the distance between the driver gear
and the bearing.
Figure: Sketch of the filament for three types of distances between the driver gear and the bearing. Left shows when they are too far apart. The
middle shows the correct distance and the right sketch displays the filament when the distance is too small.
66 Leapfrog BV