Same .gcode file - two different printers - very different results
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Sounds like your steps per mm may be out. is it all axis or just the Z?
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My guess is that you have configured 2x the microstepping on the Duet (
M360M350 in config.g), but you have configured the steps/mm (M92 in config.g) after that and haven't doubled the steps/mm.Do the jog buttons in DWC move the head by the correct amount?
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Appears to be just the Z .. all other dimensions are fine .. Will look at the config and check .. Thanks
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Here is the config pertinent I could find :
M92 X80 Y80 Z2560 ; Set axis steps/mm
M92 E420:420 ; Set extruder steps per mmI find no M360 entry in the config or the override ..
The Z2560 is the problem?
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what have you set for your microstepping rates? The M350 line and where is it in your Config.G in relation to the M92 line (Before or after)
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Sorry, I meant M350 not M360.
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Don't see that either .. Here it is :
; Prusa i3 config file for dc42 Duet firmware
; Prologue and comms section
M111 S0 ; Debug off
M550 PPrusai3 ; Machine name (can be anything you like)
M551 Preprap ; Machine password
;*** If you have more than one Duet on your network, they must all have different MAC addresses, so change the last digits
M540 P0xBE:0xEF:0xDE:0xAD:0xFE:0xED ; MAC Address
;*** Adjust the IP address and gateway in the following 2 lines to suit your network
M552 P0.0.0.0 ; IP address (0 = use DHCP)
M554 P192.168.1.1 ; Gateway
M553 P255.255.255.0 ; Netmask
M555 P2 ; Set output to look like Marlin
M575 P1 B57600 S1 ; Comms parameters for PanelDue
M552 S1; Movement section
M569 P0 S0 ; Drive 0 goes forwards (change to S0 to reverse it)
M569 P1 S0 ; Drive 1 goes forwards
M569 P2 S1 ; Drive 2 goes forwards
M569 P3 S0 ; Drive 3 goes forwards
M569 P4 S1 ; Drive 4 goes forwards
M574 X1 Y1 Z1 S1 ; set endstop configuration (X and Y endstops only, at low end, active high)
M906 X800 Y800 Z800 E1000 ; Set motor currents (mA)
M201 X800 Y800 Z15 E1000 ; Accelerations (mm/s^2)
M203 X15000 Y15000 Z100 E3600 ; Maximum speeds (mm/min)
M566 X600 Y600 Z30 E20 ; Minimum speeds mm/minute
M208 X200 Y250 Z200 ; set axis maximam (adjust to suit your machine)
M208 X0 Y0 Z0 S1 ; set axis minimum (adjust to make X=0 and Y=0 the edge of the bed)
M92 X80 Y80 Z2560 ; Set axis steps/mm
M92 E420:420 ; Set extruder steps per mm
G21 ; Work in millimetres
G90 ; Send absolute coordinates…
M83 ; ...but relative extruder moves; Z probe section
;M558 P1 X0 Y0 Z1 H3 F200 T5000 ; Smart IR Z probe, used for homing Z axis, dive height 3mm, probe speed 200mm/min, travel speed 5000mm/min
;G31 X11.0 Y0.5 Z1.20 P500 ; Set the probe height and threshold (put your own values here); Heater and thermistor section
;*** If you have a Duet board with 1K thermistor series resistors, change R4700 to R1000 to the following M305 commands
M305 P0 R4700 H0 L0 ; Put your own H and/or L values here to set the bed thermistor ADC correction
M305 P1 R4700 H0 L0 ; Put your own H and/or L values here to set the first nozzle thermistor ADC correction
M305 P2 R4700 H0 L0 ; Put your own H and/or L values here to set the second nozzle thermistor ADC correction
M301 H1 P10 I0.10 D100 T0.50 S1.0 ; PID settings for extruder 0
M301 H2 P10 I0.10 D100 T0.50 S1.0 ; PID settings for extruder 1
M570 S120 ; Increase to allow extra heating time if needed; Tool definition section
M563 P0 D0 H1 ; Define tool 0 to use extruder drive 0 and heater 1
G10 P0 S0 R0 ; Set tool 0 operating and standby temperatures
;*** If you have a dual-nozzle build, un-comment the following 2 lines
;M563 P1 D1 H2 ; Define tool 1
;G10 P1 S0 R0 ; Set tool 1 operating and standby temperatures; Bed probe section (not needed if you use a bed.g file)
;*** Adjust the XY coordinates in the following M557 commands to suit your build and the position of your Z probe
M557 P0 X60 Y0 ; Four...
M557 P1 X60 Y165 ; ...probe points...
M557 P2 X200 Y165 ; ...for bed...
M557 P3 X200 Y0 ; ...levelling
;M557 P4 X141 Y82.5 ; 5th probe point for levelling (un-comment this to get a 5th point at the centre of the bed); Epilogue
;*** If you are using axis compensation, put the figures in the following command
M556 S78 X0 Y0 Z0 ; Axis compensation here
T0 -
Some questions for you:
1. Is the model half the size it should be in all 3 of X, Y and Z?
2. Are you using 1.8 or 0.9deg motors?
3. Do the X, Y and Z jog buttons in Duet Web Control move the print head by the amounts you ask for?
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1- Only the Z axis appears different, X and Y look fine ..
2. 1.8 deg steppers on X.Y. Z .. (Extruder is titan w/ 0.9)
3. The jog buttons (the +/- X.Y.Z buttons?) .. I am not sure what you are asking here… They all move and in the right direction.. but I don't know whether they move the proper amount or not.. is that what you are asking? Sorry .. How do I ascertain that? -
https://photos.google.com/photo/AF1QipOlWXhrREuVYjKKfoCeHcI0rezTTRutaCMDOtgl
https://photos.google.com/photo/AF1QipNZ7kfGQyRioLUL7DPl8z_519Mvj0YaE8px4VjGSorry, photos not perfectly clear but they do show that the Z is different
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Is this the titan causing this wit the 0.9 motor?
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3. The jog buttons (the +/- X.Y.Z buttons?) .. I am not sure what you are asking here… They all move and in the right direction.. but I don't know whether they move the proper amount or not.. is that what you are asking? Sorry .. How do I ascertain that?
you can measure this using a ruler.
Move the Z-axis for example 100mm and verify if it really moved 100mm.
To me it seems your Z-axis steps are high, but it depends on the leadscrews you are using… -
How is your Z Driven ie is it a screw if so what size screw is it also on your Ramps setup could you have had 1/8 microstepping set on the Z axis?
Doug
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3. The jog buttons (the +/- X.Y.Z buttons?) .. I am not sure what you are asking here… They all move and in the right direction.. but I don't know whether they move the proper amount or not.. is that what you are asking? Sorry .. How do I ascertain that?
you can measure this using a ruler.
Move the Z-axis for example 100mm and verify if it really moved 100mm.
To me it seems your Z-axis steps are high, but it depends on the leadscrews you are using…2560 for Z would be correct for a 1.8 stepper driving the Z by a M5x0.8mm threaded rod assuming 1/16 microstepping
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Z is screw driven .. no, there was no microsteppting on the Z under Ramps.. but there was some changes to the stepping for the extruder..
This is from the titan docs:
"
Usage
Firmware Calibration
Because Titan uses a known gearing ratio and a consistently machined drive gear, we can offer a fairly accurate steps / mm set-point. Forgot about that ..Steps per Unit (Extruder) = Motor Steps * Micro-stepping * Gear Ratio / (Hobb Diameter * Pi)
Standard motor steps / rev = 400 for the new style motor or 200 for the old style motor (Refer to assembly steps if unsure which motor you have).
Standard micro-stepping = 16x
Gear Ratio = 3
Hobb Diameter (Effective) = 7.3
200 * 16 * 3 / (7.3 * 3.142) = 418.5
400 * 16 * 3 / (7.3 * 3.142) = 837 "I changed that number under ramps .. Is there something similar under the RepRap configs?
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There is this command in the config:
M92 E420:420 ; Set extruder steps per mm
looks like this has to change. but is this causing the problem ..
will update it to:
M92 E840:840 ; Set extruder steps per mm
does this seem reasonable?
Why not, giving it a try ..
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No that will not affect your Z AXis hight at all?
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Probably not, but sounds like it needs to be done anyway??
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Looks like no difference .. when done printing will try to measure the "jog" on the Z axis ..
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What is the thread pitch on your Z axis screw? is there any gearing between the Z axis motor and the screw?
Alternatively, do you know what Z steps/mm you were using in the firmware for the other board?
