Auto bed level measurements not making corrections

I have been trying to set up auto level my DELTA for about a month and 
I am not getting good results. I have gone thru your setup video
on youtube including the tramming .
steps.

M321 S1
home
G131
tram tower slides
G132S1
G32 S2

I am starting to think that the measurements from autolevel are not
being used during printing or manual movement.
See the sections "Using G30 at towers and center" below. Note that 
zCorr:0.000 after bed leveling.

All help is appereciated!


G32 S2
11:52:20.531 : Z correction disabled
11:52:20.531 : Info:Autoleveling disabled
11:52:24.166 : Z-probe:19.823 X:-40.00 Y:-40.00
11:52:26.896 : Z-probe:19.997 X:-40.00 Y:-20.00
11:52:29.563 : Z-probe:20.114 X:-40.00 Y:0.00
11:52:32.246 : Z-probe:20.208 X:-40.00 Y:20.00
11:52:35.023 : Z-probe:20.292 X:-40.00 Y:40.00
11:52:39.032 : Z-probe:19.806 X:-20.00 Y:-40.00
11:52:41.762 : Z-probe:19.913 X:-20.00 Y:-20.00
11:52:44.415 : Z-probe:19.954 X:-20.00 Y:0.00
11:52:47.067 : Z-probe:19.940 X:-20.00 Y:20.00
11:52:49.750 : Z-probe:19.903 X:-20.00 Y:40.00
11:52:53.665 : Z-probe:19.850 X:0.00 Y:-40.00
11:52:56.333 : Z-probe:19.816 X:0.00 Y:-20.00
11:52:58.969 : Z-probe:19.803 X:0.00 Y:0.00
11:53:01.621 : Z-probe:19.826 X:0.00 Y:20.00
11:53:04.320 : Z-probe:19.706 X:0.00 Y:40.00
11:53:08.251 : Z-probe:19.997 X:20.00 Y:-40.00
11:53:10.903 : Z-probe:19.877 X:20.00 Y:-20.00
11:53:13.540 : Z-probe:19.806 X:20.00 Y:0.00
11:53:16.192 : Z-probe:19.759 X:20.00 Y:20.00
11:53:18.828 : Z-probe:19.612 X:20.00 Y:40.00
11:53:22.728 : Z-probe:19.622 X:40.00 Y:-40.00
11:53:25.380 : Z-probe:20.000 X:40.00 Y:-20.00
11:53:28.048 : Z-probe:19.913 X:40.00 Y:0.00
11:53:30.684 : Z-probe:19.799 X:40.00 Y:20.00
11:53:33.477 : Z-probe:19.692 X:40.00 Y:40.00
11:53:33.477 : plane: a = -0.0033 b = 0.0001 c = 19.8812
11:53:33.492 : Transformation matrix: 0.999995 0.000000 0.003281 
0.000000 1.000000 -0.000145 -0.003281 0.000145 0.999995
11:53:33.492 : Printer height:218.77
11:53:33.492 : CurrentZ:19.88 atZ:20.00
11:53:33.492 : Info:Autoleveling enabled
11:53:34.272 : Z correction enabled
11:53:34.288 : X:40.07 Y:40.00 Z:19.754 E:0.0000
11:53:34.288 : Info:Autoleveling disabled
11:53:38.593 : SelectExtruder:0
11:53:38.593 : X:0.00 Y:0.00 Z:218.764 E:0.0000


Using G30 at towers and center
11:53:38.593 : Info:Autoleveling enabled
11:53:54.739 : Z-probe:9.984 X:-51.96 Y:-30.00 zCorr:0.000
11:53:57.547 : Z-probe:10.088 X:51.96 Y:-30.00 zCorr:0.000
11:54:00.309 : Z-probe:9.605 X:0.00 Y:60.00 zCorr:0.000
11:54:02.617 : Z-probe:9.900 X:0.00 Y:-0.00 zCorr:0.000

G33
11:58:55.056 : Z correction disabled
11:58:55.056 : Reference Z for measurement:20.000
11:58:58.628 : Z-probe:19.746 X:-25.01 Y:-50.00
11:59:01.452 : Z-probe:20.004 X:-0.01 Y:-50.00
11:59:04.213 : Z-probe:19.763 X:24.98 Y:-50.00
11:59:07.224 : Z-probe:20.349 X:49.98 Y:-25.01
11:59:10.110 : Z-probe:20.108 X:24.98 Y:-25.01
11:59:12.933 : Z-probe:19.903 X:-0.01 Y:-25.01
11:59:15.710 : Z-probe:19.876 X:-25.01 Y:-25.01
11:59:18.487 : Z-probe:19.984 X:-50.00 Y:-25.01
11:59:21.310 : Z-probe:20.195 X:-50.00 Y:-0.01
11:59:24.134 : Z-probe:19.997 X:-25.01 Y:-0.01
11:59:26.895 : Z-probe:19.913 X:-0.01 Y:-0.01
11:59:29.812 : Z-probe:19.997 X:24.98 Y:-0.01
11:59:32.698 : Z-probe:20.295 X:49.98 Y:-0.01
11:59:35.475 : Z-probe:20.134 X:49.98 Y:24.98
11:59:38.314 : Z-probe:19.913 X:24.98 Y:24.98
11:59:41.076 : Z-probe:19.897 X:-0.01 Y:24.98
11:59:43.977 : Z-probe:19.980 X:-25.01 Y:24.98
11:59:46.863 : Z-probe:20.818 X:-50.01 Y:24.98
11:59:49.858 : Z-probe:20.017 X:-25.01 Y:49.98
11:59:52.635 : Z-probe:19.953 X:-0.01 Y:49.98
11:59:55.490 : Z-probe:20.017 X:24.98 Y:49.98
11:59:56.348 : Info:Distortion correction matrix:
11:59:56.348 : -76, -2, 5, -2, -3
11:59:56.348 : -81, 2, 10, 9, -13
11:59:56.348 : -19, 0, 9, 0, -29
11:59:56.348 : 2, 12, 10, -11, -35
11:59:56.348 : 36, 25, 0, 24, 3
11:59:56.364 : G33 X-50.00 Y-50.00 Z0.362
11:59:56.364 : G33 X-50.00 Y-25.01 Z0.020
11:59:56.364 : G33 X-50.00 Y-0.01 Z-0.191
11:59:56.364 : G33 X-50.00 Y24.98 Z-0.814
11:59:56.364 : G33 X-50.00 Y49.98 Z-0.764
11:59:56.364 : G33 X-25.01 Y-50.00 Z0.251
11:59:56.364 : G33 X-25.01 Y-25.01 Z0.121
11:59:56.379 : G33 X-25.01 Y-0.01 Z0.000
11:59:56.379 : G33 X-25.01 Y24.98 Z0.020
11:59:56.379 : G33 X-25.01 Y49.98 Z-0.020
11:59:56.379 : G33 X-0.01 Y-50.00 Z0.000
11:59:56.379 : G33 X-0.01 Y-25.01 Z0.101
11:59:56.379 : G33 X-0.01 Y-0.01 Z0.090
11:59:56.379 : G33 X-0.01 Y24.98 Z0.101
11:59:56.395 : G33 X-0.01 Y49.98 Z0.050
11:59:56.395 : G33 X24.98 Y-50.00 Z0.241
11:59:56.395 : G33 X24.98 Y-25.01 Z-0.111
11:59:56.395 : G33 X24.98 Y-0.01 Z0.000
11:59:56.395 : G33 X24.98 Y24.98 Z0.090
11:59:56.395 : G33 X24.98 Y49.98 Z-0.020
11:59:56.395 : G33 X49.98 Y-50.00 Z0.030
11:59:56.410 : G33 X49.98 Y-25.01 Z-0.352
11:59:56.410 : G33 X49.98 Y-0.01 Z-0.291
11:59:56.410 : G33 X49.98 Y24.98 Z-0.131
11:59:56.410 : G33 X49.98 Y49.98 Z-0.030

Using G30 at towers and center
11:59:56.410 : Z correction enabled
12:00:24.007 : Z-probe:9.974 X:-51.96 Y:-30.00 zCorr:0.000
12:00:26.831 : Z-probe:10.037 X:51.96 Y:-30.00 zCorr:0.000
12:00:29.623 : Z-probe:9.625 X:0.00 Y:60.00 zCorr:0.000
12:00:32.025 : Z-probe:9.900 X:0.00 Y:-0.00 zCorr:0.000

Comments

  • You should note that G32 does appixmate a perfect plane and fits it with least deviation and then G33 adds bumps remaining from wrong geometry, but the differences are too high. You should first calibrate the geometry. Easiest solution is using esche calibartion wizard with 6 points:
    https://escher3d.com/pages/wizards/wizarddelta.php

    That gives already after G32 much better results in most cases and then you shoudl also not that G33 gives less difference between max and min correction. That also helps to get better adhesion on first layer.
  • Thank you
    But why does the Z coor show 0 correction?
  • Because it is probably not what you think. zCorr is how much z was changed due to G33 distortion map. This is 100% at z=0 and reduces to 0 at DISTORTION_END_HEIGHT height so it only corrects at the bottom. You are testing at z = 10mm which is most likely higher than that.
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