Posts made by Heide

@fcwilt This is my new Hight Map.

I have not yet started to print. I need to make the code correct first. But that should be done within the hour.
I'm using Cura Slicer and I'm not famillier with it just yet. I do not have a good reason to buy the Simplfy3d program. But maybe you can change my mind.
Does Cura slicer have a place to place the files?

RepRapFirmware height map file v2 generated at 2022-04-07 22:07, min error -0.882, max error 1.737, mean 0.094, deviation 0.622
axis0,axis1,min0,max0,min1,max1,radius,spacing0,spacing1,num0,num1
X,Y,0.00,270.00,0.00,240.00,-1.00,20.00,20.00,14,13
 -0.832, -0.775, -0.785, -0.812, -0.805, -0.795, -0.810, -0.817, -0.815, -0.830, -0.835, -0.882, -0.850, -0.875
 -0.745, -0.683, -0.678, -0.692, -0.673, -0.650, -0.660, -0.660, -0.650, -0.645, -0.650, -0.685, -0.652, -0.655
 -0.635, -0.572, -0.565, -0.567, -0.535, -0.510, -0.507, -0.505, -0.485, -0.475, -0.460, -0.487, -0.433, -0.442
 -0.527, -0.465, -0.445, -0.445, -0.405, -0.362, -0.355, -0.337, -0.315, -0.285, -0.268, -0.288, -0.237, -0.237
 -0.435, -0.352, -0.330, -0.315, -0.270, -0.230, -0.205, -0.175, -0.145, -0.110, -0.075, -0.095, -0.033, -0.015
 -0.355, -0.265, -0.235, -0.207, -0.153, -0.095, -0.065, -0.025,  0.015,  0.058,  0.092,  0.085,  0.165,  0.190
 -0.268, -0.175, -0.133, -0.102, -0.040,  0.020,  0.065,  0.115,  0.163,  0.210,  0.263,  0.268,  0.360,  0.388
 -0.173, -0.077, -0.015,  0.013,  0.090,  0.168,  0.235,  0.300,  0.365,  0.420,  0.480,  0.487,  0.585,  0.612
 -0.080,  0.038,  0.117,  0.143,  0.230,  0.315,  0.383,  0.452,  0.530,  0.602,  0.680,  0.697,  0.795,  0.835
  0.010,  0.133,  0.212,  0.255,  0.347,  0.440,  0.505,  0.575,  0.672,  0.755,  0.838,  0.865,  0.983,  1.050
  0.110,  0.232,  0.308,  0.380,  0.475,  0.572,  0.645,  0.735,  0.835,  0.930,  1.033,  1.075,  1.195,  1.283
  0.205,  0.325,  0.405,  0.482,  0.600,  0.707,  0.795,  0.885,  1.003,  1.105,  1.223,  1.277,  1.415,  1.507
  0.285,  0.435,  0.525,  0.602,  0.725,  0.845,  0.945,  1.045,  1.165,  1.275,  1.388,  1.475,  1.632,  1.737

@fcwilt Okey, It is still on going, and will be finished in about 20 min. I will look into the way you do it tomorrow. I will end the homing all file with loading of the hight map. If I understand you right, that would be just before I start a print job.
I'm exited about if this works, I hope it does.

@fcwilt Thanks for the conditions and the code. I have enabled this now.

But I get these faults, but is that normal?

I want to know how this works, so I will read it carefully

@fcwilt I'm thinking I am doing things correct, but in reality I'm doing it wrong.

Can I have a hint on what this would look like.
I will read the "Mesh bed compensation" i the docs to get an Idear on how this works

@fcwilt I do not have a mesh.g file. But maybe that would be a problem. I use the G29 file that are incorperated into DWC.

But I have been thinking that it would be posible to make my own

@fcwilt It is the last code in the tread

@heide said in Bed leveling:

Homeall and Z=0 datum (I home this is correct, but has worked for the first 2 prints)

@fcwilt Okay, this is also what I think, that the hight map looks strange, too low (But this is after the accident, if I can call it that). Before that it was over the bed. Really weird.

Is I did all that, you ask.

I used my macro that I call "Home all and Z=0 datum" before I run mesh compensation, and I have done it two times.
If there are something wrong with the code, please tell me.

@fcwilt I will have a look at it tonight when I come home from work.

But can you tell me how a code would be to be able to do that.

By the way. I can confirm that the hight level over the bed in regards of G31 is 1.5 mm. Leveled 3 times and confirmed. This is at X119,5 Y111. This is not the exact center, but the object I was going to print, was the bedcentering tool, to get the correct setting.

Hello

I have gotten an issue with the bed is very low, in the hight map.
I was not by the printer, and when I came back the printer had stopped and was pressing against the board, maybe for some time.

It was my 3 print and to 2 previous was perfict i anyway.

Yesterday I then started to print the same opjekt again, (ofcause I homed all and al that) but then the printer began to touch the bed.

I started over again, homed all. but it still persist.
Then I made a mesh bed, but the problem still persist.
Then I did it again, but still the same.

The code has not been changed, the only thing was the printer pressing against the bed. And I do not get it. What has changed?

Here are the bed leveling code and the Config.g

Config.g

; Configuration file for Duet 3 (firmware version 3.3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.3.10 on Sun Mar 27 2022 12:01:23 GMT+0200 (Centraleuropæisk sommertid)

; General preferences
M575 P1 S1 B57600                                     ; enable support for PanelDue
G90                                                   ; send absolute coordinates...
M83                                                   ; ...but relative extruder moves
M550 P"Heides Printer"                                ; set printer name
M669 K1                                               ; select CoreXY mode

; Wait a moment for the CAN expansion boards to start
G4 S2

; Network
M552 P192.168.0.110 S1                                ; enable network and set IP address
M586 P0 S1                                            ; enable HTTP
M586 P1 S0                                            ; disable FTP
M586 P2 S0                                            ; disable Telnet

; Drives
M569 P1.0 S1                                          ; physical drive 1.0 goes forwards A
M569 P1.1 S1                                          ; physical drive 1.1 goes forwards B
M569 P0.1 S1                                          ; physical drive 0.1 goes Forwards Z1
M569 P0.0 S1                                          ; physical drive 0.0 goes forwards E
M569 P0.2 S0                                          ; physical drive 0.2 goes backwards Z2
M569 P0.3 S1                                          ; physical drive 0.3 goes forwards Z3
M569 P0.4 S0                                          ; physical drive 0.1 goes backwards Z4
M584 X1.0 Y1.1 Z0.1:0.2:0.3:0.4 E0.0                  ; set drive mapping
M350 X16 Y16 Z16 E16 I1                               ; configure microstepping with interpolation
M92 X82.1328 Y82.133 Z400 E397.00                      ; set steps per mm
M566 X900.00 Y900.00 Z60.00 E120.00                   ; set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z180.00 E1200.00               ; set maximum speeds (mm/min)
M201 X500.00 Y500.00 Z20.00 E250.00                   ; set accelerations (mm/s^2)
M906 X800 Y800 Z800 E800 I30                          ; set motor currents (mA) and motor idle factor in per cent
M84 S30                                               ; Set idle timeout

; Axis Limits
M208 X0 Y0 Z0 S1                                      ; set axis minima limits
M208 X275 Y275 Z275 S0                                ; set axis maxima limits

; Endstops
M574 X2 S1 P"!io1.in"                                 ; configure switch-type (e.g. microswitch) endstop for high end on X via pin !io1.in
M574 Y2 S1 P"!io2.in"                                 ; configure switch-type (e.g. microswitch) endstop for high end on Y via pin !io2.in
M574 Z1 S2                                            ; configure switch-type (e.g. microswitch) endstop for low end on Z via pin io5.in

; Z-Probe
M558 P5 C"io4.in" H5 F120 T6000                       ; set Z probe type to switch and the dive height + speeds
M558 H30                                              ;*** Remove this line after delta calibration has been done and new delta parameters have been saved
G31 P500 X0 Y0 Z1.50                                 ; set Z probe trigger value, offset and trigger height
M557 X0:270 Y0:240

; Heaters
M308 S0 P"temp0" Y"thermistor" T100000 B3950          ; configure sensor 0 as thermistor on pin temp0
M950 H0 C"out0" T0                                    ; create bed heater output on out0 and map it to sensor 0
M307 H0 R0.753 K0.444:0.000 D3.45 E1.35 S1.00 B0      ; disable bang-bang mode for heater and set PWM limit 
M140 H0                                               ; map heated bed to heater 0
M143 H0 S120                                          ; set temperature limit for heater 0 to 120C
M308 S1 P"temp1" Y"thermistor" T100000 B4725 C7.06e-8 ; configure sensor 1 as thermistor on pin temp1
M950 H1 C"out1" T1                                    ; create nozzle heater output on out1 and map it to sensor 1
M307 H1 R3.751 K0.520:0.000 D1.88 E1.35 S1.00 B0 V23.8; disable bang-bang mode for heater and set PWM limit 
M143 H1 S300                                          ; set temperature limit for heater 1 to 300C

; Fans
M950 F0 C"out4" Q500                                  ; create fan 0 on pin out4 and set its frequency
M106 P1 S1 I0 H1 T150                                        ; set fan 0 value. Thermostatic control is turned off
M950 F1 C"out5" Q500                                  ; create fan 1 on pin out5 and set its frequency
M106 P1 S1 I0 H1 T50                                  ; set fan 1 value. Thermostatic control is turned on
M950 F2 C"out7" Q500                                  ; create fan 2 on pin out7 and set its frequency
M106 P2 S0.25 H-1                                     ; set fan 2 value. Thermostatic control is turned off
M950 F3 C"out8" Q500                                  ; create fan 3 on pin out8 and set its frequency
M106 P3 S0.25 H-1                                     ; set fan 3 value. Thermostatic control is turned off

; Tools
M563 P0 D0 H1 F-1                                     ; define tool 0
G10 P0 X0 Y0 Z0                                       ; set tool 0 axis offsets
G10 P0 R0 S0                                          ; set initial tool 0 active and standby temperatures to 0C

; Custom settings are not defined

; Miscellaneous
T0                                                    ; select first tool

Map Hight

RepRapFirmware height map file v2 generated at 2022-04-06 22:07, min error -4.715, max error -3.112, mean -4.010, deviation 0.285
axis0,axis1,min0,max0,min1,max1,radius,spacing0,spacing1,num0,num1
X,Y,0.00,270.00,0.00,240.00,-1.00,20.00,20.00,14,13
 -4.100, -4.090, -4.142, -4.213, -4.245, -4.283, -4.340, -4.395, -4.438, -4.493, -4.537, -4.630, -4.645, -4.715
 -4.120, -4.097, -4.137, -4.195, -4.215, -4.235, -4.287, -4.328, -4.363, -4.395, -4.445, -4.528, -4.530, -4.578
 -4.108, -4.082, -4.120, -4.162, -4.170, -4.190, -4.230, -4.262, -4.285, -4.318, -4.347, -4.415, -4.403, -4.455
 -4.102, -4.080, -4.102, -4.137, -4.137, -4.137, -4.165, -4.195, -4.205, -4.220, -4.245, -4.305, -4.293, -4.332
 -4.102, -4.065, -4.080, -4.100, -4.097, -4.095, -4.115, -4.125, -4.132, -4.135, -4.135, -4.205, -4.175, -4.205
 -4.118, -4.070, -4.075, -4.090, -4.070, -4.055, -4.060, -4.062, -4.057, -4.060, -4.060, -4.108, -4.065, -4.085
 -4.130, -4.075, -4.073, -4.078, -4.055, -4.033, -4.025, -4.010, -4.003, -3.995, -3.983, -4.012, -3.965, -3.965
 -4.132, -4.073, -4.047, -4.052, -4.007, -3.970, -3.945, -3.915, -3.888, -3.872, -3.845, -3.875, -3.815, -3.825
 -4.132, -4.052, -4.005, -4.017, -3.965, -3.918, -3.888, -3.852, -3.812, -3.775, -3.735, -3.753, -3.688, -3.685
 -4.137, -4.055, -4.007, -3.997, -3.940, -3.888, -3.855, -3.818, -3.760, -3.715, -3.665, -3.675, -3.588, -3.557
 -4.137, -4.052, -4.005, -3.970, -3.902, -3.840, -3.803, -3.745, -3.682, -3.618, -3.555, -3.543, -3.452, -3.405
 -4.135, -4.045, -3.993, -3.953, -3.868, -3.797, -3.743, -3.682, -3.602, -3.535, -3.450, -3.423, -3.325, -3.265
 -4.150, -4.035, -3.975, -3.925, -3.832, -3.745, -3.680, -3.608, -3.525, -3.445, -3.367, -3.310, -3.185, -3.112

Homeall and Z=0 datum (I home this is correct, but has worked for the first 2 prints)

G91                   ; relative positioning
G1 H2 Z5 F6000        ; lift Z relative to current position
G1 H1 X305 Y305 F1800 ; move quickly to X or Y endstop and stop there (first pass)
G1 H1 X305            ; home X axis
G1 H1 Y305            ; home Y axis
G1 X-5 Y-5 F6000      ; go back a few mm
G1 H1 X305 F360       ; move slowly to X axis endstop once more (second pass)
G1 H1 Y305            ; then move slowly to Y axis endstop
G90
G91
G1 X-5 Y-35 F2000     ; put the head wherever you want it to be when you home Z (omit this line if it doesn't matter)
G1 H1 Z-400 F360      ; move Z down stopping at the endstop
G90                   ; absolute positioning
G92 Z0                ; set Z position to axis minimum (you may want to adjust this)

G29 S2                ; cancel mesh bed compensation
M290 R0 S0            ; cancel baby stepping
G1 H2 Z5 F6000        ; lift Z relative to current position
G1 X119.5 Y111        ; move probe to bed center
G30                   ; do single probe - sets Z to probe trigger height - if trigger height is wrong Z position will be wrong
G29 S1                ; Load height map from file

Regards
Heide

@fcwilt I have now adjusted the config.g and it works. I stille need to level the bed by hand, but that must be later on.

Please mark it as solved and thank you very much for your help

@fcwilt There are no adjusters. But I kan dissasemble the bed and adjust with shims. I have done that a couple of times. But it seems that I didn't take the Gantry in count. It also needs to be levelled. Or mayby I misunderstand that. I have browsed the internet, and I still needs to read up on the method, to figure out how to get the gantry to be even. I would like to at a tight setup, with no compensation, but that must be in a dream world I will hit the sheets now, and get back tomorrow

@fcwilt It is a Voron 2.4

@fcwilt here it is

I still need some tweeking, but almost complete. I will make a new one tomorrow. I will adjust accoring to your explanation. Thanks

RepRapFirmware height map file v2 generated at 2022-04-04 20:58, min error -0.880, max error 2.263, mean 0.810, deviation 0.709
axis0,axis1,min0,max0,min1,max1,radius,spacing0,spacing1,num0,num1
X,Y,0.00,270.00,0.00,240.00,-1.00,20.00,20.00,14,13
      0,      0,      0,      0,      0,      0,      0,      0,      0,      0,      0,      0,      0,      0
      0,  2.263,  2.043,  1.743,  1.447,  1.213,  0.913,  0.627,  0.383,  0.125, -0.110, -0.465, -0.785, -0.880
      0,  2.207,  1.983,  1.760,  1.435,  1.195,  0.965,  0.688,  0.438,  0.215, -0.005, -0.305, -0.615, -0.757
      0,  2.155,  1.950,  1.703,  1.398,  1.205,  0.980,  0.735,  0.490,  0.260,  0.075, -0.235, -0.510, -0.667
      0,  2.078,  1.885,  1.642,  1.388,  1.160,  0.978,  0.765,  0.518,  0.323,  0.178, -0.145, -0.397, -0.525
      0,  1.983,  1.820,  1.628,  1.388,  1.205,  1.015,  0.785,  0.562,  0.390,  0.235, -0.027, -0.300, -0.428
      0,  1.945,  1.780,  1.553,  1.375,  1.215,  1.005,  0.825,  0.615,  0.420,  0.268, -0.027, -0.207, -0.342
      0,  1.855,  1.693,  1.540,  1.308,  1.148,  0.993,  0.843,  0.655,  0.500,  0.358,  0.103, -0.075, -0.182
      0,  1.767,  1.648,  1.470,  1.305,  1.148,  1.040,  0.892,  0.735,  0.582,  0.442,  0.255,  0.068, -0.055
      0,  1.668,  1.575,  1.443,  1.257,  1.160,  1.030,  0.895,  0.763,  0.625,  0.510,  0.345,  0.173,  0.058
      0,  1.580,  1.485,  1.355,  1.240,  1.130,  1.013,  0.885,  0.765,  0.648,  0.543,  0.405,  0.245,  0.175
      0,  1.513,  1.425,  1.320,  1.210,  1.105,  1.005,  0.898,  0.793,  0.690,  0.610,  0.490,  0.350,  0.295
      0,  1.425,  1.358,  1.263,  1.168,  1.092,  1.005,  0.910,  0.815,  0.730,  0.663,  0.567,  0.447,  0.408

@fcwilt When you read the hightmap, is the numbers off or is it normal?

@fcwilt No the probe is not 100 mm. from the nozzle. I have now changes that to x = 15 mm, and Y = 20 mm. Is it very importent that it is precise?
It is some confusing with the + and the -.

I have now altered the coordinates, and will start it up again, to see if that helped

I'm having problems with Mesh Bed Compensation.

It simple does not make the compensation on the hole bed, it only uses half the bed to compensate on?

Does anyone have an idea about what is going on.

I have just taken this screenshot

Here are a previous hightmap

RepRapFirmware height map file v2 generated at 2022-04-03 21:40, min error 0.365, max error 2.213, mean 1.158, deviation 0.407
axis0,axis1,min0,max0,min1,max1,radius,spacing0,spacing1,num0,num1
X,Y,15.00,270.00,15.00,240.00,-1.00,20.00,20.00,13,12
      0,      0,      0,      0,      0,  2.213,  1.905,  1.568,  1.355,  1.145,  0.830,  0.528,  0.365
      0,      0,      0,      0,      0,  2.098,  1.828,  1.560,  1.335,  1.130,  0.875,  0.565,  0.395
      0,      0,      0,      0,      0,  2.007,  1.770,  1.477,  1.312,  1.142,  0.882,  0.643,  0.463
      0,      0,      0,      0,      0,  1.945,  1.707,  1.480,  1.278,  1.115,  0.858,  0.675,  0.490
      0,      0,      0,      0,      0,  1.902,  1.668,  1.453,  1.270,  1.130,  0.910,  0.723,  0.553
      0,      0,      0,      0,      0,  1.805,  1.600,  1.408,  1.215,  1.100,  0.890,  0.735,  0.562
      0,      0,      0,      0,      0,  1.725,  1.565,  1.395,  1.202,  1.098,  0.933,  0.795,  0.638
      0,      0,      0,      0,      0,  1.640,  1.515,  1.318,  1.205,  1.095,  0.955,  0.820,  0.690
      0,      0,      0,      0,      0,  1.553,  1.433,  1.255,  1.183,  1.072,  0.930,  0.805,  0.695
      0,      0,      0,      0,      0,  1.477,  1.362,  1.247,  1.150,  1.050,  0.928,  0.830,  0.725
      0,      0,      0,      0,      0,  1.400,  1.300,  1.192,  1.115,  1.035,  0.930,  0.840,  0.760
      0,      0,      0,      0,      0,  1.320,  1.235,  1.138,  1.090,  1.028,  0.942,  0.860,  0.793

And here are the Config.g

; Configuration file for Duet 3 (firmware version 3.3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.3.10 on Sun Mar 27 2022 12:01:23 GMT+0200 (Centraleuropæisk sommertid)

; General preferences
M575 P1 S1 B57600                                     ; enable support for PanelDue
G90                                                   ; send absolute coordinates...
M83                                                   ; ...but relative extruder moves
M550 P"Heides Printer"                                ; set printer name
M669 K1                                               ; select CoreXY mode

; Wait a moment for the CAN expansion boards to start
G4 S2

; Network
M552 P192.168.0.110 S1                                ; enable network and set IP address
M586 P0 S1                                            ; enable HTTP
M586 P1 S0                                            ; disable FTP
M586 P2 S0                                            ; disable Telnet

; Drives
M569 P1.0 S1                                          ; physical drive 1.0 goes forwards A
M569 P1.1 S1                                          ; physical drive 1.1 goes forwards B
M569 P0.1 S1                                          ; physical drive 0.1 goes Forwards Z1
M569 P0.0 S1                                          ; physical drive 0.0 goes forwards E
M569 P0.2 S0                                          ; physical drive 0.2 goes backwards Z2
M569 P0.3 S1                                          ; physical drive 0.3 goes forwards Z3
M569 P0.4 S0                                          ; physical drive 0.1 goes backwards Z4
M584 X1.0 Y1.1 Z0.1:0.2:0.3:0.4 E0.0                  ; set drive mapping
M350 X16 Y16 Z16 E16 I1                               ; configure microstepping with interpolation
M92 X82.1328 Y82.133 Z400 E397.00                      ; set steps per mm
M566 X900.00 Y900.00 Z60.00 E120.00                   ; set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z180.00 E1200.00               ; set maximum speeds (mm/min)
M201 X500.00 Y500.00 Z20.00 E250.00                   ; set accelerations (mm/s^2)
M906 X800 Y800 Z800 E800 I30                          ; set motor currents (mA) and motor idle factor in per cent
M84 S30                                               ; Set idle timeout

; Axis Limits
M208 X0 Y0 Z0 S1                                      ; set axis minima limits
M208 X275 Y275 Z275 S0                                ; set axis maxima limits

; Endstops
M574 X2 S1 P"!io1.in"                                 ; configure switch-type (e.g. microswitch) endstop for high end on X via pin !io1.in
M574 Y2 S1 P"!io2.in"                                 ; configure switch-type (e.g. microswitch) endstop for high end on Y via pin !io2.in
M574 Z1 S2                                            ; configure switch-type (e.g. microswitch) endstop for low end on Z via pin io5.in

; Z-Probe
M558 P5 C"io4.in" H5 F120 T6000                       ; set Z probe type to switch and the dive height + speeds
M558 H30                                              ;*** Remove this line after delta calibration has been done and new delta parameters have been saved
G31 P500 X100 Y0 Z-0.30                                ; set Z probe trigger value, offset and trigger height
M557 X15:260 Y15:240 S20                              ; define mesh grid

; Heaters
M308 S0 P"temp0" Y"thermistor" T100000 B3950          ; configure sensor 0 as thermistor on pin temp0
M950 H0 C"out0" T0                                    ; create bed heater output on out0 and map it to sensor 0
M307 H0 R0.753 K0.444:0.000 D3.45 E1.35 S1.00 B0      ; disable bang-bang mode for heater and set PWM limit 
M140 H0                                               ; map heated bed to heater 0
M143 H0 S120                                          ; set temperature limit for heater 0 to 120C
M308 S1 P"temp1" Y"thermistor" T100000 B4725 C7.06e-8 ; configure sensor 1 as thermistor on pin temp1
M950 H1 C"out1" T1                                    ; create nozzle heater output on out1 and map it to sensor 1
M307 H1 R3.751 K0.520:0.000 D1.88 E1.35 S1.00 B0 V23.8; disable bang-bang mode for heater and set PWM limit 
M143 H1 S300                                          ; set temperature limit for heater 1 to 300C

; Fans
M950 F0 C"out4" Q500                                  ; create fan 0 on pin out4 and set its frequency
M106 P1 S1 I0 H1 T150                                        ; set fan 0 value. Thermostatic control is turned off
M950 F1 C"out5" Q500                                  ; create fan 1 on pin out5 and set its frequency
M106 P1 S1 I0 H1 T50                                  ; set fan 1 value. Thermostatic control is turned on
M950 F2 C"out7" Q500                                  ; create fan 2 on pin out7 and set its frequency
M106 P2 T45:65 F50 H-1                                ; set fan 2 value. Thermostatic control is turned off
M950 F3 C"out8" Q500                                  ; create fan 3 on pin out8 and set its frequency
M106 P3 T45:65 F50 H-1                                ; set fan 3 value. Thermostatic control is turned off

; Tools
M563 P0 D0 H1 F-1                                     ; define tool 0
G10 P0 X0 Y0 Z0                                       ; set tool 0 axis offsets
G10 P0 R0 S0                                          ; set initial tool 0 active and standby temperatures to 0C

; Custom settings are not defined

; Miscellaneous
T0                                                    ; select first tool

I hope that there is an explanation to this.

@engikeneer I will use the mesh Comp. Thanks

I can see the point in what your both saying, and of cause the size of the nozzle and layer hight are also important. And I can also see the potential in stepper motors with a smaller angle.

I have a bed that is 8 mm. thick and a smooth surface. But I do not think that is is even/levelled enough.
I can maybe find something to adjust the last 0.1 mm. but is it worth it or will the compensation fix that?

@fcwilt What could that degree be? I'm thinking that 1/10 of a mm. is off. But it could also be 1/3 of a mm.

I think that anything over 0.04 mm. is to much, but again I don't now the accepted tolerances.

What is your opinion on that?