Jammed some paper in between the looser end on the worm gear and the bearing and it seems to have helped. I have ordered a new nimble (as they have a slightly improved version now) so maybe I need to get a replacement worm gear? I will have to measure it first and see if it was manufactured incorrectly.

Latest posts made by Syko_Symatic
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RE: Strange Printing Defect! Please Help,
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RE: Strange Printing Defect! Please Help,
@damianm reducing the extruder acceleration to 1000 did wonders to be honest. I will have to check a few other slicer settings and esteps to see if I can improve on the finish I am currently getting.
It's good but now as good as I got from it on my previous printer.
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RE: Strange Printing Defect! Please Help,
Spoke quickly to Brian from Zesty Tech over email. He suggested a few things which have improved the quality but still not quite there 100%. May be having a call with him tomorrow.
One thing I have mentioned to him though, the worm gear seems much looser in the bearing on one end, I am not sure if this is intentional but may be an issue?
If anyone can suggest anything to improve this result further I am all ears....
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RE: Strange Printing Defect! Please Help,
@phaedrux diagonals, yes, circles no.
With the nimble what could actually cause that eccentricity?
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RE: Strange Printing Defect! Please Help,
@phaedrux extruder eccentricity? Never heard that term before? Could you give me a quick run down on it?
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RE: Strange Printing Defect! Please Help,
@alexander-mundy I have contacted the guys at zesty earlier today and await their reply.
Config below:
; Configuration file for S.H.I.E.L.D. Printer (by James Lawes)
;Date Mofidied: 03-2-19; Communication and General
G90 ; Send absolute coordinates...
M83 ; ...but relative extruder movesM667 S1 ; Switch to CoreXY mode
M111 S0 ; Debugging off
G21 ; Work in millimetres
M555 P2 ; Set firmware compatibility to look like Marlin; WIFI
M550 PSHIELD ; Set machine name
M540 P0x60:0x01:0x94:0x0C:0x54:0x28 ; set MAC address
M552 S1 ; Enable network and acquire dynamic address via DHCP
M554 P192.168.1.1 ; Set gateway; *** PanelDue Touch Display
M575 P1 B57600 S1 ; Assign serial channel #1 (P1)
; Set baud to 57.6k and only accept commands
; valid with checksum (parameter S1); Drives
M569 P0 S0 ; X Motor runs forwards
M569 P1 S0 ; Y Motor runs forwards
M569 P2 S1 ; Z Motor runs forwards
M569 P4 S1 ; E Motor runs forwards; Movement
M906 X800 Y800 Z800 E600 I60 ; Set motor currents (mA) and motor idle factor in per cent (tweaked for motor temps)
M201 X4000 Y4000 Z12 E240 ; Set accelerations (mm/s^2)
M203 X8000 Y8000 Z240 E2750 ; Set maximum speeds (mm/min)
M566 X400 Y400 Z20 E30 ; Set maximum instantaneous speed changes (mm/min)
M84 S30 ; Set idle timeout; Stepping
M350 X64 Y64 Z16 E16 I1 ; Configure microstepping with interpolation
M92 X320 Y320 Z400 E2820 ; Set steps per mm; Pressure Advance
;M572 D0 S0.7; Axis Limits
M208 X-15 Y-10 Z0 S1 ; Set axis minima
M208 X315 Y290 Z300 S0 ; Set axis maxima; Endstops
M574 X1 Y2 S1 ; Define active high microswitches; Z-Probe
M574 Z1 S2 ; Set endstops controlled by probe
M307 H3 A-1 C-1 D-1 ; Disable heater on PWM channel for BLTouch
M558 P9 H5 F120 T6000 ; Set Z probe type to bltouch and the dive height + speeds
G31 P500 X0 Y0 Z1.6 ; Set Z probe trigger value, offset and trigger height
M557 X40:280 Y40:280 S55 ; Define mesh grid; Heaters
M307 H0 B0 S1.00 ; Disable bang-bang mode for the bed heater and set PWM limit
M305 P0 T100000 B4138 R4700 ; Set thermistor + ADC parameters for heater 0
M143 H0 S110 ; Set temperature limit for heater 0 to 120C
M305 P1 X501 R4700 ; Configure PT1000 for heater 1
M307 H1 A505.6 C174.5 D6.6 S1.00 V24.3 B0
M143 H1 S290 ; Set temperature limit for heater 1 to 280C; Fans
M106 P0 S1 I0 F500 H1 T40 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned on
M106 P1 S0 I0 F100 H-1 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned off; Tools
M563 P0 D0 H1 F1 ; 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
M572 D0 S0.03M564 H0
M501T0
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RE: Strange Printing Defect! Please Help,
Yes, I have. It's all nice and smooth it just seems a bit inconsistent when extruding. Apparently from some digging in several forums you can add 15k diff fluid as a lubricant on the nimble which apparently helps?
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Strange Printing Defect! Please Help,
I have built a corexy printer based on the hypercube. All gates idlers, pulleys and belts.
I cannot get rid of this weird texture!I have tried upping and lowering currents, rebuilding and cleaning the hotend (v6) and liner rails, printing faster, printing slower, adjusting jerk, acceleration and max speed, calibrated the esteps a few times, changing filament, PID tuning, praying to the beard of Zues, however no luck.
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RE: CoreXY - X-Axis Vibration Issues
@deckingman Without a massive change to the placement of pulleys and such it's unfortunately not possible.
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RE: CoreXY - X-Axis Vibration Issues
@fcwilt Having a think about it, the E3D design uses the fabtotum style corexy which places the belts in front and behind the x carriage. It is technically possible to move them both behind the carriage, would that help?