Best posts made by JayT

@jay_s_uk : ok got it. you can mark this thread as Solved.
Thank you again!

@Phaedrux :

I have one machine on Duet3. I flashed 3.5RC4. after this extruder motor holds the torque but does not move on extrude commands. When i go back to 3.4.6, it extrudes fine. looks similar to what she's reported. Mine is dual extruder.

Can anyone confirm that 3.5RC4 with their system:
a) drives dual extruder fine
b) Can you test Resume after power failure & check if it resumes fine & does not print from an offset. (for me it occurs in Y direction only).
This happens with Duet2 wifi based belt driven machine.

https://forum.duet3d.com/topic/35334/jerk-acceleration-value-change-after-resume-apf/10?_=1713269800841

c) Can anyone suggest a few checkpoints ?

@jay_s_uk

I have attached the config file.
NOTE:

1. IF I run M115 B40 or M115 B41, I get positive response. both communicate well & the LEDs blinking is in sync. Same 3.4 beta3 on all boards.
2. Also I noticed, if I configure single board with B40 address and run the second extruder it works. So this confirms no problem with second motor or the board. Something in config is weird?
3. I haven't used G4 commands.
   NOTE: config is too raw, just for trial purpose. main purpose is to try running dual extruder via exp- 1XDs.
4. B40 (no jumpers), B41-XD : jumper on CAN-FD-OUT.
   Mainboard to B40 in -> B40 out -> B41-in-> Jumper on the B41-out.
5. I tried removing all jumpers too to see just in case it works.
   
   

(not able to upload file , so pasted images of the config).

@JayT :

This problem of extruder not working with Duet 3 is resolved after flashing RRF3.5.1.
Shifting problem remains same with Duet2, after resume on power failure.

@JayT
@dc42 : After few trials, we confirmed that since timer (job duration & the decrementing simulation time) starts immediately after pressing Print. Here if the bed & extruder temperatures are not attended yet, the warmup duration accounts only for bed heater time to attain target temperature. Extruder time to attain temperature is not accounted.
Hence we reach to condition (t<0) and simulated time completes displays N/A, while print is still running for few minutes.

2 methods to resolve this:

1. We account extruder temperature also in warm up duration
2. we start simulated time once Print actually starts (after warm up of bed & extruder)

What do you suggest ?
Do we evaluate time to attain extruder target temperature? Can you direct us to the code to change?

@modl :

Seam is not the issue. If we change this, it does not reduce gap.
Backlash does though. But even then I see the flatness at the top & bottom surfaces of the circle.

I also observed very less similar flatness in left & right most sides of the circle. Is this due to some slippage?