AEP-CHS-20191117 32
10.3 Thermal Expansion Calibration
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This is used when autoleveling has bene applied but printing remains difficult due to the gap
between bed and nozzle in certain X and Y sections.
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You should record the setting value before making changes so that you can restore it if
necessary.
1.
Run NewCreatorK on PC and connect to the printer via the [CONNECT] screen.
2.
Select the 20 mm calibration box in the NewCreatorK sample file. Make the image size 10
mm smaller from each side of the bed build size. Make the Brim line 20, and while printing,
optimize the correction value.
3.
At the bottom of the Control window, adjust the "Thermal Expansion Bed Calibration" value
for 4 places to correct the autoleveling error as follows.
From the front, the bed's 4 vertex positions are defined by the values a, b, c, and d.
BACK
A 0.1
B -0.1
C 0.1
D -0.1
FRONT
1.
Assuming the center is fixed, correct the autoleveling error by changing the values of
A and D or B and C.
2.
Observe the first layer output and set the correction value for the 4 vertex position
between the nozzle and the bed.
3.
You need to set the correction value so that value D goes down as value A goes up
and value C goes down as value A goes up.
4.
To reduce the gap between the nozzle and the bed, subtract the height you want to
reduce from the previously set value. To increase the spacing, add to the existing
value.
5.
Set the compensation value so that the sum of the two diagonal vertices is equal (A +
D = B + C).
6.
It is recommended to adjust the correction value within the range of 0.01 mm to 0.1
mm from the existing value.
Example 1) Given the setting value of nozzle and bed spacing as follows, to open the spacing
by 0.01mm at Point A and narrow the spacing by 0.02 mm at point C, set the correction value