Nozzles physical Z Height changes when moving horizontally (Solved)
Ok, I got a lot of problems fixed to where I can at least start tuning it.
My only issue at the moment is (numbers are just an example of my problem)
Max Z height = 390mm
Min Z height = 0mm
I send my nozzle to X-0, Y-0, Z-10.
When I move my nozzle to the end of the bed (in any direction), the Z gradually raises.
So lets say i'm at Z Height 10 in the center, if I move to the edge the Web Control still shows Z Height 10, but physically the nozzle is at Z Height 15 - 20. (again, it raises in any direction)
; Configuration file for Duet WiFi (firmware version 1.20 or newer)
; executed by the firmware on start-up
; generated by RepRapFirmware Configuration Tool on Sun Dec 31 2017 15:54:08 GMT-0500 (Eastern Standard Time)
; General preferences
M111 S0 ; Debugging off
G21 ; Work in millimetres
G90 ; Send absolute coordinates…
M83 ; ...but relative extruder moves
M555 P1 ; Set firmware compatibility to look like RepRapFirmare
; Automatic saving after power loss is not enabled
M665 R323.275 L450 B155 H390 ; 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
M208 Z0 S1 ; Set minimum Z
M574 X2 Y2 Z2 S1 ; Set active high endstops
M558 P1 H5 F120 T6000 ; Set Z probe type to unmodulated and the dive height + speeds
G31 P500 X0 Y0 Z2.5 ; Set Z probe trigger value, offset and trigger height
M557 R155 S20 ; Define mesh grid
M569 P0 S0 ; Drive 0 goes backwards
M569 P1 S0 ; Drive 1 goes backwards
M569 P2 S0 ; Drive 2 goes backwards
M569 P3 S0 ; Drive 3 goes backwards
M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
M92 X80 Y80 Z80 E663 ; Set steps per mm
M566 X1200 Y1200 Z1200 E1200 ; Set maximum instantaneous speed changes (mm/min)
M203 X18000 Y18000 Z18000 E1200 ; Set maximum speeds (mm/min)
M201 X1000 Y1000 Z1000 E1000 ; Set accelerations (mm/s^2)
M906 X1000 Y1000 Z1000 E800 I30 ; Set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout
M305 P0 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 0
M143 H0 S120 ; Set temperature limit for heater 0 to 120C
M305 P1 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 1
M143 H1 S280 ; Set temperature limit for heater 1 to 280C
M563 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
M550 PMG v1.0 ; Set machine name
M552 S1 ; Enable network
M587 S"The Salt's-2G" P"TheGoodLife!0716!" ; Configure access point. You can delete this line once connected
M586 P0 S1 ; Enable HTTP
M586 P1 S0 ; Disable FTP
M586 P2 S0 ; Disable Telnet
M106 P0 S0.3 I0 F500 H-1 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
M106 P1 S1 I0 F500 H1 T45 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on
M106 P2 S1 I0 F500 H1 T45 ; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned on
; Custom settings are not configured
T0 ; Select first tool
Here are the stepper motors i'm using.
Your delta printer isn't calibrated. Check that the steps/mm settings in your M92 command are correct, then calibrate your printer. See https://duet3d.com/wiki/Calibrating_a_delta_printer.
Martin_S last edited by
At the center is Z=10, but if you move to the edges of the bed the nozzle rises right?
What happens if you send the nozzle back to the center? Does it go back to Z=10 or it keeps going up?
If it goes back to Z=10 my guess is that your delta radius is way off.
Happy new year for the ones that are close to midnight!!!
Yes the nozzle goes back to physical Z=10 when i go back to center.
I put in all the values not 100% but extremely close. I used the RRF Configuration Tool.
M665 R323.275 L450 B155 H390
Delta Radius (R)-323.275mm. Measurement from middle of print bed to the center of the tower
Diagonal Arm Length (L)-450mm. For this am I literally measuring center of tower to effector joint in parallel? If so it would be
like 230ish, but when I put that in there, when I click Home all, it does the physical action of homing all,
but then in the web control is says X-9999.9, Y-9999.9, Z-9999.9 and won't let me control anything. So i
just put in 450mm for center of ball to ball length.
Printable radius (B)-155mm. I'm using a 310mm print bed, so half of that is 155mm.
Homed Height (H)-390mm. measurement from nozzle to bed (not accurate since the nozzle is changing z height when i try to
level the bed.
One a side note, how does one measure Maximum carriage travel? Then I look at the "hint" when you hover over it and it says "Maximum travel length in Z direction", wouldn't that be my "Homed Height"?
I'm about to install these FSRs on here to see if it will auto calibrate and adjust those settings for me. But i'm not sure to what extent those will help. Never used them before.
heathmanc last edited by
Take a look at your delta radius, seems awfully large, like twice what it should be. Do an image search on google for a picture of how to measure.
Ok I see what happened. In the RRF Configuration Tool it says "Distance between the centre of your towers and the joint at the effector. So I was measuring from the center of the effector joint to the center of the tower, when from the google images i looked at it said to measure to the other center of ball. And it looks pretty even now and now raises the z height, thanks everyone!
Martin_S last edited by