The "kickstarter-autodesk-3d-master" test print, the underlying features of the test model, which affect the passing of the test, refinement of the test model and the results of the test print on the 3d printer "Lad-1.0".
This test is allowing to quantify the printer's capabilities. The test was conducted twice.
Test #1 was performed with the following settings:
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Material - ABS is unpainted from # 3DPlast.
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The diameter of the nozzle is 0.3 mm.
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The height of the layer is 100 μm.
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The printing temperature is 240 degrees C.
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The default speed is 40 mm/s.
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The speed of the outer perimeters is 20 mm/s.
Based on the results, a score of 27 out of 30 was obtained..
In the course of the test, the precision of the construction of the test platform 2 (the accuracy of the plastic feed) was revealed, which affects the printing, but does not affect the evaluation of the test. It turned out that the features of the model do not allow the S3D Slicer to properly work the platform base, which causes the perimeter to sag (especially when printing with relatively thin layers) and the reset of some of the loops of the supporting surface formed on it.
To eliminate unnecessary complications during the test, required changes were made to the model geometry. Then, after installing the nozzle with diameters of 0.4 mm and increasing the height of the layer to 200 μm, another test was performed (#2). Based on the results, an estimate of 25.5 out of 30 was obtained.
Test #1.
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Dimensional Accuracy - 5
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Fine Flow Control - 5
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Fine Negative Features - 4
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Overhangs - 3
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Bridging - 5
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XY Resonance - 2,5
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Z-axis alignment - 2,5
Scoring - 27
Difficulties and causes in printing the test 2 platform.
Let's compare the construction of bridges (test 5) and test 2 platform:
A. Constructing a bridge (shown at the top of the figure),
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perimeters are printed between two supports,
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also the bridge's support surface is printed between the two supports,
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the next layers of the model are printed over the formed support surface.
B. Bbuilding a platform (shown at the bottom of the figure),
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perimeters are printed along the contour of the future reference surface,
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the reference surface is printed between the previously formed supports and a thin perimeter hanging in the air. At this length, the thin perimeter under the weight of the supporting surfaces laid on it looms and a part of the loops are not sufficiently welded together, they are not welded to the compliant thin perimeter and are discarded,
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without a normally formed support surface, subsequent layers lie randomly and form a test area only at the expense of its total thickness.
Changes in the test model in order to correct the reference test 2 platform
Since the reference pad itself does not affect the evaluation of the test, the perimeter of the 1.5 mm height was added to the model for the normal formation of the test 2 platform.
The result is shown in the figure..
The modified model is here:
Test #2.
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Dimensional Accuracy - 5
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Fine Flow Control - 2,5
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Fine Negative Features - 4
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Overhangs - 4
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Bridging - 5
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XY Resonance - 2,5
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Z-axis alignmen - 2,5
Scoring - 25,5
