Olivetti 3D S2, Service Manual

Page: 42 / 112

3-20 Service Manual Y118040-3
CALIBRATING THE EXTRUDER OFFSETS
To be able to print with the dual extruder you must calibrate the offsets of the two printheads.
Before proceeding with the offset calibration, adjust the nozzle height as described in the Chapter NOZZLE
PRINT PLATE CALIBRATION PROCEDURE and
REPLACING THE NOZZLES”
.
The two hot-ends are kept in position by a block of aluminium. Their nominal alignment should be, on the
horizontal surface, X = 55 and Y = 0. However it is possible, due to small tolerances of the parts, that the
two heads are not aligned at this value. In this case it is necessary to carry out a calibration operation using
a test piece to allow any appropriate offset values to be set in the slicing software.
You are advised to carry out this operation whenever the heads are adjusted, changed, etc., or when
operations are carried out on the bakelites or on the nozzles.
The part to print for offset calibration is located in the following subfolder of the SD Card:
\GCODE\CALIBRATION\DUAL_HEAD\calibration_test.gcode
If the horizontal and vertical lines in each of the two colours
are not aligned, you must “compensate” for the
excess in the X and Y elements by measuring the piece printed on the plate, as follows:
Figure 3-35
The misalignments measured on the printed piece, as shown in the illustration, allow you to set the
compensation for the slicer offset parameter as follows:
Δ
X+ Insert the X axis offset obtained from the measurement as a positive value
Δ
X- Insert the X axis offset obtained from the measurement as a negative value
ΔY
+ Insert the Y axis offset obtained from the measurement as a positive value
ΔY
- Insert the Y axis offset obtained from the measurement as a negative value
Horizontal
Alignment
[Y]
Horizontal
Alignment
[X]