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ok I have finally got the printer up and running. The only lingering problem i Just can't seem to get ironed out is the extruder clicking every now and then. I included a copy of my config file. I have a Bondtech QR extruder. I have tried adjusting the steps but it didn't seem to do anything. Any Ideas?

TIA
Ricky

Configuration file for dc42 Kossel

; Communication and general
M111 S0 ; Debug off
M550 ; Machine name (can be anything you like)
M551 ; Machine password (used for FTP)
M540 P0xBE:0xEF:0xDE:0xAD:0xFE:0x42 ; 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 ; Gateway
M553 P255.255.255.0 ; Netmask
M555 P2 ; Set output to look like Marlin
M575 P1 B57600 S1 ; Set auxiliary serial port baud rate and require checksum (for PanelDue)

; Axis and motor configuration
M569 P0 S1 ; Drive 0 goes forwards
M569 P1 S1 ; Drive 1 goes forwards
M569 P2 S1 ; Drive 2 goes forwards
M569 P3 S1 ; Drive 3 goes backwards
M569 P4 S1 ; Drive 4 goes backwards
M574 X2 Y2 Z2 S1 ; set endstop configuration (all endstops at high end, active high)

M665 R144.378 L291.060 H330.915 B140.0 X0.335 Y0.174 Z0.00 ; set delta radius, diagonal rod length, printable radius, homed height and XY tower corrections
M666 X0.10 Y0.16 Z-0.26 ; put your endstop adjustments here, or use auto calibration to find them
M92 X80 Y80 Z80 ; Set axis steps/mm (20 tooth pulleys, 0.9deg/step motors)
M906 X1000 Y1000 Z1000 E1200 I40 ; Set motor currents (mA)
M201 X3000 Y3000 Z3000 E1000 ; Accelerations (mm/s^2)
M203 X20000 Y20000 Z20000 E3600 ; Maximum speeds (mm/min)
M566 X1200 Y1200 Z1200 E1200 ; Maximum instant speed changes
G21 ; Work in millimetres
G90 ; Send absolute coordinates...
M83 ; ...but relative extruder moves

; Thermistors and heaters
M305 P0 T100000 B3950 R4700 H0 L0 ; Typical Chinese bed thermistor. Put your own H and/or L values here to set the bed thermistor ADC correction.
M305 P1 T100000 B4388 R4700 H0 L0 ; E3Dv6 hot end. Put your own H and/or L values here if necessary to set the first nozzle thermistor ADC correction.
M301 H0 P20 I0.5 D1000 T0.85 W150 B5 ; PID settings for the bed
M301 H1 P10 I0.10 D100 T0.50 ; PID settings for extruder 0
M307 H1 A426.7 C196.3 D11.5 B0
M570 S200 ; Allow extra heating time

; Tool definitions
M563 P0 D0 H1 ; Define tool 0
G10 P0 S0 R0 ; Set tool 0 operating and standby temperatures
M92 E460.83 ; Set extruder steps per mm for first and second extruders

; Z probe and compensation definition
M558 P1 X0 Y0 Z1.0 H20 F300 T12000 ; Z probe is IR and is not used for homing any axes, Z probe dive height 3mm, probing speed 300mm/min, travel speed 12000mm/min
G31 X0 Y0 Z0.42 P500 ; Set the zprobe offset and threshold (put your own values here). For a delta, use zero X and Y offset.

;*** If you are using axis compensation, put the figures in the following command
M556 S78 X0 Y0 Z0 ; Axis compensation here

M207 S7.0 F3600 Z0.1 ; Set firmware retraction details
M572 D0 S0.1 ; set pressure advance

T0 ; select first print head


Edit: to add config text.

I don't know the Bondtech extruder, but some extruders with metal gears tend to clunk when the extruder direction is reversed towards the end of a move due to pressure advance. Maybe it's caused by backlash in the gears. You could comment out the M572 command near the end of your config.g file to see whether this is what's happening.