@sebkritikel quello che ho corretto io funziona bene
ho provato e l'estrusore funziona bene

Buona notte a tutti

@sebkritikel thank you so much my friend

ecco la configurazione funzionante per la tronxy x5sa pro con duet, in caso qualcun'altro ne avesse bisogno

; Configuration file for Duet WiFi (firmware version 3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v2.1.8 on Thu Apr 02 2020 20:16:54 GMT+0200 (Ora legale dell’Europa centrale)

; General preferences
G90 ; send absolute coordinates...
M83 ; ...but relative extruder moves
M550 P"X5SA PRO" ; set printer name

M669 K1 ; select CoreXY mode

; Network
M552 S1 ; enable network
M586 P0 S1 ; enable HTTP
M586 P1 S0 ; disable FTP
M586 P2 S0 ; disable Telnet

; Drives
M569 P0 S0 ; physical drive 0 goes backwards
M569 P1 S0 ; physical drive 1 goes backwards
M569 P2 S0 ; physical drive 2 goes forwards
M569 P3 S1 ; physical drive 3 goes forwards
M584 X0 Y1 Z2 E3 ; set drive mapping
M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation
M92 X80.00 Y80.00 Z800.00 E420.00 ; set steps per mm
M566 X900.00 Y900.00 Z12.00 E120.00 ; set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z100.00 E1200.00 ; set maximum speeds (mm/min)
M201 X500.00 Y500.00 Z20.00 E250.00 ; set accelerations (mm/s^2)
M906 X800 Y800 Z800 E800 I30 ; set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout

; Axis Limits
M208 X-5 Y0 Z0 S1 ; set axis minima
M208 X352 Y330 Z400 S0 ; set axis maxima

; Endstops
M574 X1 S1 P"!xstop" ; configure active-high endstop for low end on X via pin xstop
M574 Y1 S1 P"!ystop" ; configure active-high endstop for low end on Y via pin ystop
M574 Z1 S2 ; configure Z-probe endstop for low end on Z

; Z-Probe
M558 P5 C"! zprobe.in" 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 X60:300 Y50:300 S20 ; define mesh grid

; Heaters
M308 S0 P"bedtemp" Y"thermistor" T100000 B4092 ; 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
M143 H0 S120 ; set temperature limit for heater 0 to 120C
M307 H0 B0 S1.00 ; disable bang-bang mode for the bed heater and set PWM limit
M140 H0 ; map heated bed to heater 0
M308 S1 P"e0temp" Y"thermistor" T100000 B4092 ; 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
M143 H1 S280 ; set temperature limit for heater 1 to 280C
M307 H1 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit

; Fans
M950 F0 C"fan0" Q500 ; create fan 0 on pin fan0 and set its frequency
M106 P0 S0 H-1 ; set fan 0 value. Thermostatic control is turned off
M950 F1 C"fan1" Q500 ; create fan 1 on pin fan1 and set its frequency
M106 P1 S1 H1 T45 ; set fan 1 value. Thermostatic control is turned on

; Tools
M563 P0 D0 H1 F0 ; 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

no problem, I don't wear it and I'm happy like this

@Phaedrux

ok, I'll call you hawkeye, correct and take the test again

@Phaedrux ok I will try in the meantime I disassembled the x axis turned the bearings
"just to give it a try while I was waiting for some advice from you" and now I've reassembled it and put it back to making a cold mesh to see if anything has changed, then I'll try to print to see if the mesh works or not, tomorrow I will post the results with and without mesh, for the moment thanks @Phaedrux.

even the temperatures will have to lower by 5 degrees, petg mold at 230 degrees the print bed 75 degrees

@Phaedrux

probable, in fact I put my hand back to the configuration and I lowered the jerk from 1000 to 600, then once another piece is printed if I get improvements I post a photo

and it never happened to me, at least until recently

@Stephen6309

The plate on top helps prevent filament from falling into the hole. I knew this, as far as I know with care there are tricks to avoid the plate, maybe I have the wrong settings I just have to understand where I was wrong, but to make you understand better I designed this to make you understand ..

The piece I did it with fusion 360

@Phaedrux Good afternoon, here are the files you requested!

Aggancio telaio v3.stl

OK I'll post it all tomorrow afternoon

thanks for the answer, but it seems a bit strange to me since I have always printed and I do not say that the circles were perfect but not oval for sure, I will investigate more thoroughly

Good evening everyone, I'm here to submit a printing problem. I would like to know if it has happened to any of you that when you print vertically, these circles, when finished printing, turn out to be oval.
Board: Duet 2 WiFi (2WiFi)
Firmware: RepRapFirmware for Duet 2 WiFi / Ethernet 3.2 (2021-01-05)
Duet WiFi Server Version: 1.25
Slicer - Simplify3d and Cura 4.8

@Phaedrux
what I don't understand is the MOVE and AXES command in the link you sent me and that I had already seen I didn't find them