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Voron Bed 350 x 350 uneven

N

Nordlicht77

Active member
Hello
I'm having trouble getting my bed straight, the bed looks like a soup plateDo I have a wrong setting or is the record really lower in the middle?

Screenshotforum .png

My mesh setting is
[bed_mesh]
mesh_min: 25, 25
mesh_max: 325, 325
speed = 100
horizontal_move_z = 2
probe_count = 9.9
algorithm = bicubic
zero_reference_position: 175, 175
split_delta_z = 0.0125
move_check_distance = 3
mesh_pps = 4.4
fade_start = 0
fade_end = 2
fade_target = 0

I made the magnet folder again after a video here in the forum
If I need a new record what do you think about itPlane milled aluminum plate with magnetsfor example

Platte ebay
 
Hello, what probe do you use?
This image is when printer is cold, or heat-soaked for at least 45 minutes, possibly more since you have 350?
Does the shape change if you rotate the bed, or at least steel plate, by 90 degrees?
You can put something with a straight edge, like a rules, across the bed, and shine flashlight from behind. Does the bed look like warped?
The difference is 0.2 mm ... the picture makes it look worse that it really is. Are you facing issues with first layer?

The bed you posted would not work with inductive probes (including Beacon).
 
Hi
I have a Voron 350 with Voron Tap
The printer is new and I am not aware of any overheating
Here are the pictures
steckervorne.png

steckerhinten.png

What still surprises me is that I have to set under sample samples_tolerance: 0.04, otherwise sample samples always exceed samples tolerance
I have first layer problems I thought it was because of the FR4 plate

Checked the plate with a flashlight, there is some light in the middle
 
0.04 is way low accuracy on what Tap can do ... make sure all screws - especially those on rail - are tight. And adjust magnets properly, that one is very important too.
If there's a hole in the middle, then it is possible that the build plate is not even. But Tap should compensate for it anyway, and the deviation of 0.2 mm over 350 is not catastrophic :unsure:
 
You might want to check the tightness of the screws holding the bed down; having them too tight can overly constrain the bed and not allow for horizontal expansion. I have my back left screw tight, back right and front left lightly snugged, and front right just enough to touch the plate mounting hole.
 
ah2049 said:
You might want to check the tightness of the screws holding the bed down; having them too tight can overly constrain the bed and not allow for horizontal expansion. I have my back left screw tight, back right and front left lightly snugged, and front right just enough to touch the plate mounting hole.
Click to expand...
Good point! Thank you, yes, that can be cause for bed taco as well.
 
No one ever asks if their rails are straight (vs. the bed). Is that never a factor practically?
 
Tuco said:
No one ever asks if their rails are straight (vs. the bed). Is that never a factor practically?
Click to expand...
It can be a factor, yes. That's why I suggested measiring with straight edge against some light. If there was inductive probe, could turn the bed 90 degrees and check if it is the same, with Tap, obviously this is not possible. But there is something weird with the Tap too, that's a very low accuracy there.
 
Hi

I'm now at 0.0085 samples_tolerance, it's gotten much better, it's only with the first Z motor where he got the message the first time
comes with samples_tolerance I don't know why
Extruder completely disassembled and also CNC-Tap-for-Voron disassembled, cleaned and re-greased the rail and ruler carriage
Magnets cannot be adjusted on this model
github.com

CNC-Tap-for-Voron/Manual/CNC_Voron_Tap_Build_Guide.pdf at master · Chaoticlab/CNC-Tap-for-Voron

Contribute to Chaoticlab/CNC-Tap-for-Voron development by creating an account on GitHub.
github.com github.com
screws tightened

Let CNC-Tap-for-Voron run without a hotend if the result is the same it was the same

Input shaper made again see pictures it is now apparently something small because of input shaper

The rails should be straight, I built them in so that they don't warp
and

Tighten the Z-Belt again and tighten it to 140 hz and then with the Tension_Meter from the side
github.com

VoronUsers/printer_mods/Kruppes/Tension_Meter at master · VoronDesign/VoronUsers

Voron Community mods, slicer profiles and firmware configurations. - VoronDesign/VoronUsers
github.com github.com
finely tuned
Adjust the screws as described by @ah2049

Vref and Current recalculated and the TMC drivers set in the config and on Octopus Pro

Engine designation : 17HS19-2004S-C

current = 1.10
Vref = 1.55

Here the config of sample Z area and qgl

[quad_gantry_level]
gantry_corners =
-60,-10
410,420
points =
60,25
60,275
310,275
310,25
speed: 150
#horizontal_move_z: 2
retries: 5
retry_tolerance: 0.00500
#max_adjust: 10

[probe]
pin = EBBCan: PB5
x_offset = 0
y_offset = 0
speed: 5.0
samples: 3
samples_result: median
sample_retract_dist: 3.0
samples_tolerance: 0.0085
samples_tolerance_retries: 3
activate_gcode:
{% set PROBE_TEMP = 150 %}
{% set MAX_TEMP = PROBE_TEMP + 5 %}
{% set ACTUAL_TEMP = printer.extruder.temperature %}
{% set TARGET_TEMP = printer.extruder.target %}

{% if TARGET_TEMP > PROBE_TEMP %}
{ action_respond_info('Extruder temperature target of %.1fC is too high, lowering to %.1fC' % (TARGET_TEMP, PROBE_TEMP)) }
M109 S{ PROBE_TEMP }
{% else %}
# Temperature target is already low enough, but nozzle may still be too hot.
{% if ACTUAL_TEMP > MAX_TEMP %}
{ action_respond_info('Extruder temperature %.1fC is still too high, waiting until below %.1fC' % (ACTUAL_TEMP, MAX_TEMP)) }
TEMPERATURE_WAIT SENSOR=extruder MAXIMUM={ MAX_TEMP }
{% endif %}
{% endif %}


[stepper_z]
step_pin = PF11
dir_pin = !PG3
enable_pin = !PG5
rotation_distance = 40
gear_ratio = 80:16
microsteps = 32
endstop_pin = probe:z_virtual_endstop
position_max = 310
position_min = -4
homing_speed = 80
full_steps_per_rotation = 200

[tmc2209 stepper_z]
uart_pin = PC6
interpolate = false
run_current = 1.10
sense_resistor = 0.110
stealthchop_threshold: 9999
driver_TOFF: 4
driver_HEND: 5
driver_HSTRT: 0

[stepper_z1]
step_pin: PE2
dir_pin: PE3
enable_pin: !PD4
rotation_distance: 40
gear_ratio: 80:16
microsteps: 32
full_steps_per_rotation = 200

[tmc2209 stepper_z1]
uart_pin: PE1
interpolate: false
run_current: 1.10
stealthchop_threshold: 9999
sense_resistor: 0.110
driver_TOFF: 4
driver_HEND: 5
driver_HSTRT: 0

[stepper_z2]
step_pin: PF9
dir_pin: !PF10
enable_pin: !PG2
rotation_distance: 40
gear_ratio: 80:16
microsteps: 32
full_steps_per_rotation = 200

[tmc2209 stepper_z2]
uart_pin: PF2
interpolate: false
run_current: 1.10
stealthchop_threshold: 9999
sense_resistor: 0.110
driver_TOFF: 4
driver_HEND: 5
driver_HSTRT: 0

[stepper_z3]
step_pin: PC13
dir_pin: PF0
enable_pin: !PF1
rotation_distance: 40
gear_ratio: 80:16
microsteps: 32
full_steps_per_rotation = 200

[tmc2209 stepper_z3]
uart_pin: PE4
interpolate: false
run_current: 1.10
stealthchop_threshold: 9999
sense_resistor: 0.110
driver_TOFF: 4
driver_HEND: 5
driver_HSTRT: 0

#*# [bed_mesh default]
#*# version = 1
#*# points =
#*# 0.000000, -0.148750, -0.075000
#*# -0.041250, -0.286250, -0.181250
#*# 0.021250, -0.126250, -0.068750
#*# x_count = 3
#*# y_count = 3
#*# mesh_x_pps = 4
#*# mesh_y_pps = 4
#*# algo = bicubic
#*# tension = 0.2
#*# min_x = 30.0
#*# max_x = 315.0
#*# min_y = 30.0
#*# max_y = 315.0

neuermesh.pngresonances_y_20230805_124427.pngresonances_x_20230805_124214.png
 
I just read in another thread that there is a tool on Github probe_accuracy_testprobe_accuracy_test
If I understand the graphic correctly, the Z belts are not the same
Leveling
4...3...2...1...Done
min max first last mean std count range drift
test
1:corner 30samples (30, 315) 0.405665 0.415665 0.415665 0.408165 0.408373 0.001740 30 0.01000 -0.00750
2:corner 30samples (315, 315) 0.503165 0.506915 0.506915 0.503165 0.504457 0.001333 30 0.00375 -0.00375
3:corner 30samples (30, 30) 0.434415 0.440665 0.440665 0.436915 0.435873 0.001471 30 0.00625 -0.00375
4:corner 30samples (315, 30) 0.513165 0.518165 0.516915 0.516915 0.515748 0.001269 30 0.00500 0.00000
--------------------------------------------------------------------------------

Take 20 probe_accuracy tests to check for repeatability
Test number: 20...19...18...17...16...15...14...13...12...11...10...9...8...7...6...5...4...3...2...1...Done
min max first last mean std count range drift
test
01: center 10samples 0.730665 0.735665 0.735665 0.731915 0.731915 0.001443 10 0.00500 -0.00375
02: center 10samples 0.730665 0.738165 0.738165 0.730665 0.731540 0.002361 10 0.00750 -0.00750
03: center 10samples 0.728165 0.735665 0.735665 0.729415 0.729915 0.002220 10 0.00750 -0.00625
04: center 10samples 0.728165 0.734415 0.734415 0.728165 0.729665 0.001936 10 0.00625 -0.00625
05: center 10samples 0.724415 0.730665 0.730665 0.724415 0.725165 0.001972 10 0.00625 -0.00625
06: center 10samples 0.729415 0.734415 0.734415 0.730665 0.730665 0.001443 10 0.00500 -0.00375
07: center 10samples 0.725665 0.733165 0.733165 0.728165 0.727665 0.002058 10 0.00750 -0.00500
08: center 10samples 0.719415 0.726915 0.726915 0.721915 0.721915 0.001954 10 0.00750 -0.00500
09: center 10samples 0.724415 0.730665 0.730665 0.725665 0.725665 0.001863 10 0.00625 -0.00500
10: center 10samples 0.721915 0.728165 0.728165 0.721915 0.722915 0.002024 10 0.00625 -0.00625
11: center 10samples 0.723165 0.731915 0.731915 0.723165 0.724915 0.002582 10 0.00875 -0.00875
12: center 10samples 0.724415 0.730665 0.730665 0.725665 0.725790 0.001811 10 0.00625 -0.00500
13: center 10samples 0.723165 0.731915 0.731915 0.725665 0.725540 0.002462 10 0.00875 -0.00625
14: center 10samples 0.724415 0.730665 0.730665 0.724415 0.726040 0.001773 10 0.00625 -0.00625
15: center 10samples 0.719415 0.725665 0.725665 0.720665 0.720915 0.001748 10 0.00625 -0.00500
16: center 10samples 0.715665 0.723165 0.723165 0.718165 0.717540 0.002145 10 0.00750 -0.00500
17: center 10samples 0.714415 0.723165 0.723165 0.714415 0.716790 0.002462 10 0.00875 -0.00875
18: center 10samples 0.715665 0.721915 0.721915 0.716915 0.716790 0.001905 10 0.00625 -0.00500
19: center 10samples 0.716915 0.725665 0.725665 0.718165 0.718665 0.002582 10 0.00875 -0.00750
20: center 10samples 0.716915 0.725665 0.725665 0.718165 0.719040 0.002433 10 0.00875 -0.00750

Your probe config uses median of 3 sample(s) over 20 tests
Below is the statistics on your median Z values, using different probe samples
mean min max std range sample_count
0 0.729915 0.721915 0.738165 0.004684 0.016250 1
1 0.727353 0.719415 0.735040 0.004803 0.015625 2
2 0.724790 0.716915 0.731915 0.004969 0.015000 3
3 0.724478 0.716290 0.731290 0.005000 0.015000 4
4 0.724228 0.715665 0.730665 0.005037 0.015000 5
5 0.724103 0.715665 0.731290 0.005002 0.015625 6
6 0.724040 0.715665 0.731915 0.005067 0.016250 7
7 0.724009 0.715665 0.731915 0.005115 0.016250 8
8 0.723977 0.715665 0.731915 0.005166 0.016250 9
9 0.724009 0.715665 0.731915 0.005115 0.016250 10
--------------------------------------------------------------------------------

Take 100 samples in a row to check for drift
min max first last mean std count range drift
test
center 100samples 0.715665 0.723165 0.723165 0.720665 0.718478 0.001735 100 0.0075 -0.0025

20230806_0051_corner_test.png
 
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