help to setup M557 Mesh size

lui2004

Phaedrux

What material?

Have you redone PID tuning since changing the nozzle?

Have you recalibrated the extruder steps after changing it? Your extrusion multiplier says 0.75 that would be oddly low if your extruder steps per mm is correct.

Have you tuned pressure advance?

Are you printing the gcode over USB using S3D or are you uploading the gcode file to the duet via the web interface?

I would increase the extruder jerk from M566 E300 to E3000
Tune pressure advance. With a direct drive start with 0.04

For retraction tuning I would increase retraction speed from 40 to 60 and uncheck only retract when crossing open spaces, check force retraction between layers, enable minimum travel for retraction, 3mm is fine, and uncheck wipe extruder for outer-most perimeters.

I'd probably also turn on relative extrusion distances (but that's neither here nor there)

lui2004

material is Petg
Yes i have done the pid tuning nozzle and bed
yes i have recalibrated the Esteps.
EM is calibrated by this method:
https://help.prusa3d.com/en/article/extrusion-multiplier-calibration_2257

is this method ok or i must use an other method to calibrate the EM ?

no, i dont use pressure advance,i have read the thread that is for Bowden

i upload the gcode via webinterface

Phaedrux

Give this one a try

https://duet3d.dozuki.com/Guide/Ender+3+Pro+and+Duet+Maestro+Guide+Part+4:+Calibration/40#s165

Pressure advance is for direct drive as well. Bowden users have more to gain from it, but it does help with direct as well.

lui2004

now i have calibrated my printer with this method:
https://duet3d.dozuki.com/Guide/Ender+3+Pro+and+Duet+Maestro+Guide+Part+4:+Calibration/40#s165

the layers looks smoother with pressure advance: 0.04

Esteps is perfect with 415 Stepsit will extrude 100mm
Petg EM is 93 no gaps and the 2 walls are perfect,no gaps betweens the walls

but printing the cube the z-seam is broken take a look at the photo

Phaedrux

@lui2004 said in help to setup M557 Mesh size:

but printing the cube the z-seam is broken take a look at the photo

Did you make any of the other retraction changes I suggested?

A broken wall like that on a 2 wall print with a stacked z seam isn't surprising. If there is a gap on the first layers it will continue to migrate upwards because there is nothing below it to build upon. You can't print in mid air.

Try a more complex test print like your original part. Set your seam position to nearest for petg to try to reduce stringing.

lui2004

yes i have changed the retraction now i have :
Retraction Distance: 1.00 mm
Restraction Speed : 60 mm/s

i will reprint the Tensioner for my printer

i will post the result after the print

Phaedrux

@Phaedrux said in help to setup M557 Mesh size:

uncheck only retract when crossing open spaces, check force retraction between layers, enable minimum travel for retraction, 3mm is fine, and uncheck wipe extruder for outer-most perimeters.

I meant these specifically.

lui2004

yes i have changed this

Phaedrux

I'm going to sleep now, good luck on your test print.

lui2004

thanks mate !
have a good sleep

lui2004

is it possible to save the pressuere advance ?
M572 D0 S0.04

because i send everytime when i turn on printer the M572 Command

thanks

jay_s_uk

put it in your config.g

lui2004

somewhere in the config.g ?

jay_s_uk

i have mine at the end after tool definition

lui2004

@lui2004 said in help to setup M557 Mesh size:

M572 D0 S0.04

thanks

lui2004

Hi

after i solved the issues above i have problem with G29 my bed is not flat or is it ok ?

my bltouch setup in config.g:

M558 P9 C"^zprobe.in" T8000 A5 R0.5            ; set Z probe type to bltouch and the dive height + speeds
M950 S0 C"exp.heater7"                         ; create servo pin 0 for BLTouch
G31 P25 X41.2 Y4.5 Z2.096                    ; set Z probe trigger value, offset and trigger height
M557 X41.2:221.2 Y4.5:219.5 S20                       ; define mesh grid

my results in hightmap.csv:

RepRapFirmware height map file v2 generated at 2020-10-06 10:18, min error -0.078, max error 0.066, mean -0.019, deviation 0.031
xmin,xmax,ymin,ymax,radius,xspacing,yspacing,xnum,ynum
41.20,221.20,4.50,219.50,-1.00,20.00,20.00,10,11
  0.053,  0.040,  0.066,  0.051,  0.025,  0.042,  0.046,  0.021, -0.008,  0.004
  0.003, -0.012,  0.030,  0.025,  0.002,  0.012,  0.016, -0.013, -0.048, -0.025
 -0.022, -0.022,  0.020,  0.018, -0.004, -0.000,  0.001, -0.028, -0.060, -0.037
 -0.053, -0.057, -0.008, -0.007, -0.035, -0.030, -0.021, -0.044, -0.075, -0.053
 -0.060, -0.060, -0.021, -0.019, -0.044, -0.037, -0.019, -0.043, -0.066, -0.042
 -0.078, -0.075, -0.028, -0.033, -0.053, -0.038, -0.018, -0.037, -0.063, -0.033
 -0.068, -0.065, -0.024, -0.032, -0.054, -0.034, -0.016, -0.033, -0.058, -0.028
 -0.041, -0.051, -0.017, -0.022, -0.052, -0.040, -0.018, -0.030, -0.052, -0.015
 -0.024, -0.041, -0.007, -0.014, -0.033, -0.020, -0.002, -0.017, -0.035, -0.014
 -0.034, -0.046, -0.012, -0.014, -0.028, -0.009,  0.008, -0.000, -0.025,  0.008
 -0.012, -0.024,  0.015,  0.018,  0.010,  0.043,  0.041,  0.013, -0.008,  0.017

dc42

It would be easier for us to tell if you posted an image of the height map as displayed by DWC.

lui2004

thats no problem

dc42

That looks good enough to print on to me!