Geeetech A30 User Manual page 15

a. Too high: If the distance between nozzle and hot bed is too far, filament will not stick to the
bed well. See picture (4-6).
b. Too low: If the distance between nozzle and hot bed is too close, it prevents filament from
coming out, causes the extruder gear to click or grind on filament and even worse, it would
scratch nozzle and hot bed. See picture (4-7).
c. Moderate: Extrude filament properly and evenly. Stick to the hot bed. See picture (4-8).
In case of too high and too low, please adjust knobs under the hotbed slightly until you achieve
proper height. It may take some trial and error to achieve the best result. An example of good
first layer, see picture (4-9).
Note:
1) Be sure to adjust the height at center point (position 5) on the touch screen, after clicking
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(Picture 4-6)
(Picture 4-7)
(Picture 4-8)
(Picture 4-9)
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