3.4.0 b3 leaning prints

Adrian52

@t3p3tony I think it might be related to y direction travel between objects. With two simple 20x20x20 cubes displaced 40mm in the y direction but aligned in the x direction, I get a pronounced (18deg) slope in the - y direction on both cubes . Printing the same two cubes aligned in y but displaced in x seems to give straight sides.

T3P3Tony

@cabalsoul yes I understand that. I don't think its the gcode itself that is the issue (or even your config). Just need to be able to replicate the issue in order to help @dc42 work out what's causing it!

dc42

@adrian52 the theory I am working on would make it sensitive to the start and end points of the move, the acceleration, the requested top speed, and the input shaping. A cube with infill has a variety of moves with different start and end points, so would make leaning more likely. A hollow cube does the same XY moves over and over again, so you would be less likely to hit a problematic move, but you might hit one if you shift the cube.

Unfortunately, the rod length, delta radius and steps/mm are also likely to affect whether a move is problematic or not.

If you have a simple print that reproduces the problem readily, it would be helpful to me if you can test which of the following changes makes the problem occur or go away:

Changing acceleration
Changing requested speed
If you are using input shaping, turn it off or change the frequency.

T3P3Tony

@adrian52 ok thanks. I will try and do the same. are your test cubes hollow or with infil? are you using input shaping?

Adrian52

@t3p3tony I used 10% gyroid infill, and ei3 input shaping

jay_s_uk

@dc42 I have some more to add to the theory

Both cubes are printed with 3.4b3.
The right hollow cube is printed in vase mode.
The left hollow cube was printed as a single wall. This one had a z hop setting of 1mm
I am currently printing the same gcode with no z hop and it is not exhibiting the same leaning in Y.
here is my config

; Configuration file for Fly-E3-Pro (firmware version 3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.2.1-LPC+17 on Wed Jun 30 2021 09:24:28 GMT+0100 (British Summer Time)

; General preferences
G90                                            ; send absolute coordinates...
M83                                            ; ...but relative extruder moves
M550 P"Predator"                             ; set printer name
M665 R227 L450 B185 H400                       ; Set delta radius, diagonal rod length, printable radius and homed height
M666 X0 Y0 Z0                                  ; put your endstop adjustments here, or let auto calibration find them

; Network
M552 S1                                        ; enable network
M586 P0 S1                                     ; enable HTTP
M586 P1 S0                                     ; disable FTP
M586 P2 S0                                     ; disable Telnet

; Drives
M569 P0 S1                                    ; physical drive 0 goes forwards using TMC2209 driver timings
M569 P1 S1                                     ; physical drive 1 goes forwards using TMC2209 driver timings
M569 P2 S1                                     ; physical drive 2 goes forwards using TMC2209 driver timings
M569 P3 S1                                     ; physical drive 3 goes forwards using TMC2209 driver timings
M584 X0 Y1 Z2 E3                               ; set drive mapping
M350 X16 Y16 Z16 E16 I1                        ; configure microstepping with interpolation
M92 X160.00 Y160.00 Z160.00 E415.00               ; set steps per mm
M566 X500.00 Y500.00 Z500.00 E1000.00       ; set maximum instantaneous speed changes (mm/min) next try 3000
M203 X9000.00 Y9000.00 Z9000.00 E10000.00    ; set maximum speeds (mm/min)
M201 X1000.00 Y1000.00 Z1000.00 E3000.00       ; set accelerations (mm/s^2) next try 6000
M906 X1344 Y1344 Z1344 E560 I30                ; set motor currents (mA) and motor idle factor in per cent
M84 S30                                        ; Set idle timeout

; Axis Limits
M208 Z0 S1                                     ; set minimum Z

; Endstops
M574 X2 S1 P"e1stop"                           ; configure active-high endstop for high end on X via pin e1stop
M574 Y2 S1 P"pson"                             ; configure active-high endstop for high end on Y via pin pson
M574 Z2 S1 P"e0stop"                           ; configure active-high endstop for high end on Z via pin e0stop

; Z-Probe
M558 P8 C"probe" H5 R0.4 F1200 T6000 A9                ; set Z probe type to switch and the dive height + speeds
G31 P100 X0 Y0 Z-0.1                           ; set Z probe trigger value, offset and trigger height
M557 R180 S20                                  ; define mesh grid

; Heaters
M308 S0 P"bedtemp" Y"thermistor" T100000 B4092 ; configure sensor 0 as thermistor on pin bedtemp
M950 H0 C"e1heat" T0                           ; create bed heater output on e1heat and map it to sensor 0
M307 H0 B0 S1.00                               ; disable bang-bang mode for the bed heater and set PWM limit
M140 H0                                        ; map heated bed to heater 0
M143 H0 S120                                   ; set temperature limit for heater 0 to 120C
M143 H0 S120                                   ; set temperature limit for heater 0 to 120C
M308 S1 P"e0temp" Y"thermistor" T100000 B4725 C7.060000e-8  ; configure sensor 1 as thermistor on pin e0temp
M950 H1 C"e0heat" T1                           ; create nozzle heater output on e0heat and map it to sensor 1
M307 H1 B0 S1.00                               ; disable bang-bang mode for heater  and set PWM limit
M143 H1 S280                                   ; set temperature limit for heater 1 to 280C
M308 S2 P"boardtemp" Y"thermistor" T100000 B4092

; Fans
M950 F0 C"fan0" Q500                           ; create fan 0 on pin fan0 and set its frequency
M106 P0 S0 H-1                                 ; set fan 0 value. Thermostatic control is turned off
M950 F1 C"fan1" Q500                           ; create fan 1 on pin fan1 and set its frequency
M106 P1 S1 H1 T45                              ; set fan 1 value. Thermostatic control is turned on

; Tools
M563 P0 D0 H1 F0                               ; 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
M207 S4.0 F2400 Z1
M572 D0 S0.4
M955 P0 C"B.1+E.8" I50 

; Miscellaneous
M501
T0                                             ; select first tool

I should add that I am using no form of input shaping but I am using PA

dc42

@jay_s_uk that's interesting! Is the Z hop configured using M207 and firmware retraction, or in the slicer?

jay_s_uk

@dc42 using M207.
The gcode files are the same.
I changed it to 0 using M207 from the console and checked it to ensure it had changed

dc42

@jay_s_uk thanks. Please share the GCode, and I will try it on my delta with Z hop this afternoon.

jay_s_uk

@dc42 cube.gcode

Adrian52

@t3p3tony have now tried the two cubes without infill, without input shaping, with z hop=0, and with pa=0, and the slope in the - y direction is the same.

jay_s_uk

@adrian52 so its not z hop.
that just adds to the complexity then

CabalSoul

Here is my config and the example gcode. All my prints were printed in vase mode, no Z hop configured for PETG.

AAP_ringing.gcode

AAP_Dynamic_Acceleration_Adjustment.gcode

; General preferences
G90                                         				; Send absolute coordinates...
M83                                         				; ...but relative extruder moves

; Delta Settings
 
M665 L440.000:440.000:440.000 R227.102 H449.038 B185.0 X-0.233 Y0.113 Z0.000			 
M666 X-0.220 Y0.388 Z-0.169 A0.00 B0.00	
 

; Network
M550 P"Apex Predator"                     		               	; Set machine name
M552 S1
M586 P0 S1                                  				; Enable HTTP
M586 P1 S0                                  				; Disable FTP
M586 P2 S0                                  				; Disable Telnet


; Drives
M569 P0 S1                                  				; Drive 0 goes forwards
M569 P1 S1                                  				; Drive 1 goes forwards
M569 P2 S1                                  				; Drive 2 goes forwards
M569 P3 S0                                  				; Drive 3 goes forwards
M584 X0 Y1 Z2 E3                                                        ; set drive mapping


;Stepper Configuration
M350 X16   Y16   Z16    E16  I1								; Configure microstepping with interpolation  
M92  X160  Y160  Z160   E679								; Set steps per mm Orbiter greentec E689 @1mm 679 nonlinear
M906 X1800 Y1800 Z1800 E550 I11 							; Set motor currents (mA) and motor idle factor in per cent
M84 S30											; Set idle timeout


;Normal Speed										
M566 X900  Y900  Z900  E1200     	      	   		          		; Set JERK(mm/min)
M201 X6000  Y6000  Z6000  E3600 	   						; Set accelerations (mm/s^2)
M203 X30000 Y30000 Z30000 E15000							; Set maximum speeds (mm/min) 18k is 300mm/s
M204 P3000 T6000									; set Print accel and travel accel


; Axis Limits
M208 Z0 S1                                  				; Set minimum Z


; Endstops
M574 X2 S1 P"xstop"						; configure active-high endstop for high end on X via pin xstop
M574 Y2 S1 P"ystop"                                 		; configure active-high endstop for high end on Y via pin ystop
M574 Z2 S1 P"zstop"                                 		; configure active-high endstop for high end on Z via pin zstop

;Display
M575 P1 S0 B57600


; Z-Probe micro switch
M558 P5 C"^e0stop" H2 F460 T12000 A6                  	  	; Set Z probe type to switch and the dive height + speeds  3 Probe Iterations
G31  P500 X0 Y0 Z20.567		                 				; Set Z probe 
M557 R175 S30	                              				  ; Define mesh grid

;Super PINDA
;M558 P5 C"^exp.e2stop" H2 F460 T9000 A3
;G31  P500 X0 Y-32.750 Z1.775
;M557 R165 S30

;Dial Gauge
;M558 P0
;G31  P500 X0 Y0 Z15
;M557 R165 S30


;Filament Sensor
M591 D0 P2 C"e1_stop" S1														;activate Filament Sensor S0 for deactivating

								

; Bed Heater
M308 S0 A"Ultrabase Pro" P"bedtemp" Y"thermistor" T100000 B4300 C0 R4700		; Set thermistor + ADC parameters for heater 0
M950 H0 C"bedheat" Q250 T0                      			         			; create bed heater output on bedheat and map it to sensor 0
M307 H0 B0 R0.376 C428 D1.14 S1.00 V24.1										; Disable bang-bang mode for the bed heater and set PWM limit
M140 H0 P0																		; Create bed Heater
M143 H0 S125 A0 C0   

; Extruder Heater
M308 S1 A"Mosquito Hybrid" P"e0temp" Y"thermistor" T100000 B4725 C7.06e-8  H0 L0				; Temperature Sensor
;M308 S1 A"Mosquito Hybrid" P"e0temp" Y"thermistor" T4606017 B5848 C5.548428e-8 R4700 H0 L0	    ; blue sensor
M950 H1 C"e0heat" T1                                									    	; create nozzle heater output on e0heat and map it to sensor 1
M143 H1 S280 A0                               											    	; Set temperature limit for heater 1 to 280C
M307 H1 B0 R3.324 C137.4 D5.67 S1.00 V24.3           											; Disable bang-bang mode for the Hotend and set PWM limit
M570 H1 P15 T15 S120																			


;Additional Sensors
M308 S2 A"Chamber" P"e1temp" Y"thermistor" T100000 B4725 C7.06e-8						; define Chmaber temperature sensor
;M308 S10 P"spi.cs6" Y"dht22"       A"Filament Temperature" 					        ; define DHT22 temperature sensor DATA Pin on E3_Stop
;M308 S11 P"S10.1"   Y"dhthumidity" A"Filament Humidity[%]" 					    	; Attach DHT22 humidity sensor to secondary output of temperature sensor
M955 P0 S1000 C"spi.cs3+spi.cs4" 														; Accelerometer


; Hotend Fan
M950 F1 C"fan1" Q100                        	   			;HOTEND FAN create fan 1 on pin fan1 and set its frequency
M106 C"HotendFAN" P1 H1 L1 T45                            	; set fan 1 value. Thermostatic control is turned on

;Part Cooling Fan
M950 F0 C"!fan0+^exp.pb6" Q24000 							;CPAP create fan 0 on pin fan0 and set its frequency !fan2+exp.pb6 Q24000 
M106 C"CPAP" P0 S0 H-1        								; set fan 0 value. Thermostatic control is turned off L0.3 X1 


; Tools
M563 S"NF crazy" P0 D0 H1                           		; 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
T0															; select Tool 0


;Extrusion settings
M207 S2.5 F3600 R0 T2800 Z0 								       ;Retraction
M572 D0 S0.1													;Pressure Advance


;standard settings
M593 P"ei3"  F41.4											;F Resonance Frequency 
;M593 P"daa"  F41.5


M703														;Load filament config
M501														;load config-override

T3P3Tony

@cabalsoul thanks. so I have managed to get a lean on "simpler" boxes printed as @Adrian52 suggested, offset in the +/- Y direction. (using gyroid infil and el3 input shaping)

Has anyone observed sloping in any direction other than -Y ?

CabalSoul

@t3p3tony In my case always -Y.
If i rotate the object it doesn't change anything.

jay_s_uk

@t3p3tony in my case it is also always in -y and happens regardless of position on the build plate

Fred-Y

@t3p3tony It seems that I got one of my prints leaning on both -X and +Y

On this picture it is leaning on the left and also back.

I spent quite some time today trying to reproduce the issue on simple objects like basic cubes, calibration cubes, ringing test with and without infill (rectilinear, gyroid...) but all seems fine.
I guess I changed something on SuperSclicer ... I even checked I was still on the beta3.

T3P3Tony

@fred-y thanks for spending the time in testing this - it helps!

I will test to see if I can get a lean with the two box prints arranged in different orientations then looking for anything on +/-X

Adrian52

With a 20mm cube and a 20x20x10high cube offset in the y direction printed together, the 20mm cube (on the right) looks like this
undefined
The left cube for comparison printed with no y offset. You can see that the lean reduces after 10mm, but interestingly a smaller lean is still seen. Havent tried a 45deg rotated cube yet.

dc42

Thanks to everyone who has helped us to try to track this down. @chrishamm has managed to reduce one of your leaning prints to a pair of 2 moves that leaves one of the carriages 2 microsteps away from the correct position. I expect to be able to track down the problem now.