After Micro swiss DD upgrade,Extruder skips steps

[Veti]

@lui2004 said in After Micro swiss DD upgrade,Extruder skips steps:

i checked the datasheet and the B Value seems to be: 4267 ?

B and C change the algorithm to steinhart hart. its more accurate.

see the table

https://duet3d.dozuki.com/Wiki/Connecting_thermistors_or_PT1000_temperature_sensors#Section_Thermistor_parameters

[lui2004]

@Veti

the config is also ok like that ?

[Veti]

yes, but its still strange that you need 235 to print pla.

do you have a steel nozzle?

[lui2004]

@Veti

yes, hardened steel with Micro Swiss all metal hotend

[Veti]

@lui2004 ]

ok steel nozzle a very bad for printing pla. the thermal transfer is very low.

unless you are printing abrasive materials, a brass nozzle is a lot better.

or if you want a much better nozzle, there are copper plated nozzles
https://de.aliexpress.com/item/4000007458595.html

[lui2004]

@Veti

i print only PLA and Petg

[Veti]

then there is no need for a steel nozzle

[lui2004]

@Veti

Ok i have a cooper plated, i will change now and test it

[lui2004]

@Veti @Phaedrux

I have changed the nozzle and Calibrated all, all works fine now.
I can print PLA with 200°C! Thanks

i have another question i have Bed compensation in use: none is this normal ? i thin it should be mesh or not ?

if you need config.g or slicer start.gcode or anything else tell me i will post it

[Veti]

@lui2004

for that your G29 needs to be executed after the G28 in the slicer start code

[lui2004]

@Veti

my start.gcode looks like that:

T0
G90                ;absolute positioning
M107              ;start with the fan off
M83  	       ; extruder relative mode
M104 S[first_layer_temperature] ; set extruder temp
M140 S[first_layer_bed_temperature] ; set bed temp
; Homing & leveling
G28
M561 ; Clear any bed transform that might be in place		      
G1 X73 Y106 F4000 ; Go to bed center before probing
;Wait for Temperature
M109 S[first_layer_temperature] ; wait for extruder temp
M190 S[first_layer_bed_temperature] ; wait for bed temp
G30 ; Find the Z=0
G29 S1         ; Load the height map from the last time I used G29 to probe the bed.
G1 X5 Y10 Z0.2 F3000 ; get ready to prime
G92 E0 ; reset extrusion distance
G1 X160 E15 F600 ; prime nozzle
G1 X180 F5000 ; quick wipe

[Veti]

this should activate the mesh compensation

do you have a heightmap it can load?

[lui2004]

@Veti

yes of course!

RepRapFirmware height map file v2 generated at 2020-12-15 08:54, min error -0.019, max error 0.070, mean 0.019, deviation 0.021
xmin,xmax,ymin,ymax,radius,xspacing,yspacing,xnum,ynum
41.20,219.00,15.00,195.00,-1.00,20.00,20.00,9,10
  0.055,  0.048,  0.046,  0.056,  0.070,  0.048,  0.050,  0.068,  0.048
  0.030,  0.029,  0.036,  0.050,  0.070,  0.037,  0.037,  0.050,  0.024
  0.007,  0.005,  0.009,  0.026,  0.037,  0.007,  0.006,  0.020,  0.004
 -0.008, -0.001,  0.001,  0.015,  0.031,  0.001, -0.001,  0.014, -0.005
 -0.004, -0.014, -0.008,  0.002,  0.019, -0.010, -0.006,  0.011, -0.004
  0.002,  0.005,  0.004,  0.012,  0.024, -0.003,  0.005,  0.025,  0.002
  0.005, -0.005, -0.009, -0.006,  0.006, -0.019, -0.011,  0.015, -0.003
  0.021,  0.020,  0.002,  0.009,  0.030, -0.000,  0.012,  0.034,  0.017
  0.027,  0.014,  0.006,  0.017,  0.031,  0.006,  0.020,  0.045,  0.031
  0.036,  0.034,  0.019,  0.030,  0.061,  0.041,  0.039,  0.056,  0.035

[Veti]

did you check the mesh during the print?

if yes have a look at the generated g code if there is something after the G29 that would invalidate it.

[lui2004]

@Veti

during the print it is also Bed compensation in use: none

this a little part from the generated g.code:

; generated by PrusaSlicer 2.3.0-beta2+win64 on 2020-12-15 at 07:58:45 UTC

; 

; external perimeters extrusion width = 0.45mm
; perimeters extrusion width = 0.45mm
; infill extrusion width = 0.48mm
; solid infill extrusion width = 0.45mm
; top infill extrusion width = 0.40mm
; first layer extrusion width = 0.40mm

M107
;TYPE:Custom
T0
G90                ;absolute positioning
M107              ;start with the fan off
M83  	       ; extruder relative mode
M104 S205 ; set extruder temp
M140 S55 ; set bed temp
; Homing & leveling
G28
M561 ; Clear any bed transform that might be in place		      
G1 X73 Y106 F4000 ; Go to bed center before probing
;Wait for Temperature
M109 S205 ; wait for extruder temp
M190 S55 ; wait for bed temp
G30 ; Find the Z=0
G29 S1         ; Load the height map from the last time I used G29 to probe the bed.
G1 X5 Y10 Z0.2 F3000 ; get ready to prime
G92 E0 ; reset extrusion distance
G1 X160 E15 F600 ; prime nozzle
G1 X180 F5000 ; quick wipe
G21 ; set units to millimeters
G90 ; use absolute coordinates
M83 ; use relative distances for extrusion
; Filament gcode
;LAYER_CHANGE
;Z:0.2
;HEIGHT:0.2
G10 ; retract
G1 Z0.200 F7800.000
G1 X70.563 Y70.965
G11 ; unretract
;TYPE:Skirt
G1 F900.000
G1 X71.065 Y70.492 E0.01957
G1 X71.368 Y70.349 E0.00952
G1 X71.629 Y70.293 E0.00756
G1 X148.407 Y70.297 E2.17871
G1 X148.632 Y70.349 E0.00657
G1 X148.935 Y70.492 E0.00951
G1 X149.437 Y70.965 E0.01957
G1 X149.650 Y71.366 E0.01287
G1 X149.707 Y71.629 E0.00764
G1 X149.707 Y148.371 E2.17768
G1 X149.650 Y148.634 E0.00764
G1 X149.437 Y149.035 E0.01287

[Veti]

that is strange.

if you issue G29 S1 in the console what does the compensation say?

[lui2004]

@Veti

if i activeted via console i got:

Bed compensation in use: mesh

[Veti]

i dont see anything in the g code that would deactivate the mesh compensation.

[lui2004]

@Veti

Strange Things

Can i post my config and homing files to check if its all ok ?

[Veti]

@lui2004
sure

you could also execute each line one by one from the start g code and check after each line if mesh compensation is on.