@jens55 temp tower help diagnosed the issue I had to drop the temperature by 30° and push the retraction speed up to 90 at 3 mm and now it's working perfect thank you so much!!!!

@Phaedrux i wll try with your settings and follow up

@Phaedrux im using the 100 K Thermistor the small glass one that came with the original hot end

@jens55 temp tower help diagnosed the issue I had to drop the temperature by 30° and push the retraction speed up to 90 at 3 mm and now it's working perfect thank you so much!!!!

@jens55 this is a new roll of PLA that I also dried for 8 hours I'll run the temperature tower but I've always ran this at 210 on my previous board and it was fine but I'll run temp tower and try again

I just updated my alfa wise u20 (24v) to the Duet Wi-Fi board and have been experiencing a lot of stringing and cannot for the life of me figure out what I'm doing wrong ive been printing retraction towers using the Cura plugin and none of them have come out right I've even adjust the retraction as high as 9mm and calibrated the esteps (bond Tech extruder) multiple times and still having the same issue

I added a second fan just in case it didnt have enough cooling but it didnt have any effect.

; Configuration file for Duet WiFi (firmware version 3.3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.3.16 on Sat Sep 02 2023 11:50:40 GMT-0500 (Central Daylight Time)

; General preferences
M575 P1 S1 B57600 ; enable support for PanelDue
G90 ; send absolute coordinates...
M83 ; ...but relative extruder moves
M550 P"AlfawiseU20" ; set printer name

; 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
M569 P1 S0 ; physical drive 1 goes backwards
M569 P2 S1 ; physical drive 2 goes forwards
M569 P3 S0 ; physical drive 3 goes backwards
M584 X0 Y1 Z2 E3 ; set drive mapping
M350 E16 I0 ; configure microstepping without interpolation
M350 X16 Y16 Z16 I1 ; configure microstepping with interpolation
M92 X80.00 Y80.00 Z400.00 E432.00 ; set steps per mm
M566 X900.00 Y900.00 Z12.00 E300.00 ; set maximum instantaneous speed changes (mm/min)
M203 X12000.00 Y12000.00 Z180.00 E3000.00 ; set maximum speeds (mm/min)
M201 X600.00 Y600.00 Z20.00 E1000.00 ; set accelerations (mm/s^2)
M906 X950 Y950 Z950 E950 I0 ; set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout

; Axis Limits
M208 X0 Y0 Z0 S1 ; set axis minima
M208 X300 Y300 Z300 S0 ; set axis maxima

; Endstops
M574 X1 S1 P"!xstop" ; configure switch-type (e.g. microswitch) endstop for low end on X via pin !xstop
M574 Y1 S1 P"!ystop" ; configure switch-type (e.g. microswitch) endstop for low end on Y via pin !ystop
M574 Z1 S1 P"!zstop" ; configure switch-type (e.g. microswitch) endstop for low end on Z via pin !zstop

; Z-Probe
M558 P0 H5 F120 T12000 ; disable Z probe but set dive height, probe speed and travel speed
M557 X10:300 Y40:300 S52 ; define mesh grid

; Heaters
M308 S0 P"bedtemp" Y"thermistor" T100000 B4725 C7.06e-8 ; configure sensor 0 as thermistor on pin bedtemp
M950 H0 C"bedheat" T0 ; create bed heater output on bedheat and map it to sensor 0
M307 H0 ; enable bang-bang mode for the bed heater and set PWM limit
M140 H0 ; map heated bed to heater 0
M143 H0 S80 ; set temperature limit for heater 0 to 80C
M308 S1 P"e0temp" Y"thermistor" T100000 B4725 C7.06e-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 R2.805 K0.673:0.000 D3.95 E1.35 S1.00 B0 ; disable bang-bang mode for heater and set PWM limit
M143 H1 S280 ; set temperature limit for heater 1 to 280C

; Fans
M950 F0 C"fan0" Q500 ; create fan 0 on pin fan0 and set its frequency
M106 P0 S0 H1 T45 ; set fan 0 value. Thermostatic control is turned on
M950 F1 C"fan1" Q500 ; create fan 1 on pin fan1 and set its frequency
M106 P1 S0 H-1 ; set fan 1 value. Thermostatic control is turned off
M950 F2 C"fan2" Q500 ; create fan 2 on pin fan2 and set its frequency
M106 P2 S0 H-1 ; set fan 2 value. Thermostatic control is turned off

; Tools
M563 P0 D0 H1 F0:1 ; 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

@o_lampe I switch to bang bang and it went away Thank you guys so much for your help this was really annoying

Please help my duet 2 WIFI heats the bed and hot end with out a problem but when trying to maintain the bed temp the power supply squeaks extremely bad i've tried using with 12v and a 24v power supply but it still has problems! Video attached