2.03RC5 leveling issue

[SPAX]

@dc42
Now better, but not ideal (((

Calibrated 6 factors using 16 points, deviation before 0.450 after 0.109
Calibrated 6 factors using 16 points, deviation before 0.260 after 0.174
Calibrated 6 factors using 16 points, deviation before 0.207 after 0.156
Calibrated 6 factors using 16 points, deviation before 0.346 after 0.113
Why this happening?
First layer poor....some place the nozzle touching the bed some plase have pit...
If I run G29 the nozzle starting print like on wave... and first layer much more poor .

[dc42]

@spax, what type of Z probe do you have on your delta printer?

After run G32 a few times, if you then run G29, what does the height map look like?

[SPAX]

@dc42, I use your IR probe.
22:32:26G29
109 points probed, min error -0.158, max error 0.575, mean 0.214, deviation 0.150
Height map saved to file heightmap.csv
22:26:15G32
Calibrated 6 factors using 16 points, deviation before 0.178 after 0.100
22:25:04G32
Calibrated 6 factors using 16 points, deviation before 0.239 after 0.095
22:23:55G32
Calibrated 6 factors using 16 points, deviation before 0.371 after 0.126

[SPAX]

I have 6mm aluminium plate + 0.5 heatsink pad + 4mm glass (back side painted in black).

[SPAX]

@dc42 any thoughts?

[Phaedrux]

Can you rerun the G29 heightmap with a piece of plain paper covering the bed surface? The idea being to eliminate any inconsistencies in the IR probe reading the surface.

[dc42]

Also please post a screen shot with the height map rotated so that we are looking along the X axis.

[SPAX]

@dc42 @Phaedrux

19:36:16G29
97 points probed, min error -0.587, max error 1.307, mean 0.383, deviation 0.415
Height map saved to file heightmap.csv

19:28:00M500

19:27:48G32
Calibrated 6 factors using 16 points, deviation before 0.254 after 0.091

19:26:43M500

19:26:37G32
Calibrated 6 factors using 16 points, deviation before 0.132 after 0.111

19:25:31M500

19:25:01G32
Calibrated 6 factors using 16 points, deviation before 0.209 after 0.080

19:23:54M500

19:23:44G32
Calibrated 6 factors using 16 points, deviation before 0.379 after 0.108

[dc42]

That height map looks terrible, as if you are probing off the edge of the bed or something like that.

[SPAX]

@dc42 Coz idea with paper is bad idea) Paper of sheet not 100% flat...

[garyd9]

@spax said in 2.03RC5 leveling issue:

@dc42 Coz idea with paper is bad idea) Paper of sheet not 100% flat...

That height map has high points "0.25mm of more" and low points "-0.25 or less." A sheet of paper isn't going to deviate in thickness by over 0.5mm!

[SPAX]

@garyd9 @dc42
that also because paper sheet was be not on all bed surface...I have bed dia 40cm, paper A4

[dc42]

Time to get a bigger sheet of paper?