Duet/RRF Big printing problems

pro3d

Thanks but what am I supposed to do with M207 - where does that go and how do I use it - with G10/11?

Phaedrux

@pro3d said in Duet/RRF Big printing problems:

@monster-delta

Thanks but what am I supposed to do with M207 - where does that go and how do I use it - with G10/11?

M207 sets the parameters used for firmware retraction. To use G10/11 the slicer needs to be set to use firmware retraction which I described above for Cura which needs a plugin called printer settings.

pro3d

@deckingman

Thanks for taking time to write a long feedback on my troublesome journey. This time around I did everything by the book and kept it simple stupid from the configurator with no extra features or specials to test the plug and play experience

I will try to change my hotend as it is my last hope to find it was a component and not the firmware

I want this to be a plug and play experience as the marlin controller is for this machine printing beautiful with same setup so I am not going to use so much time on the detailed calibration that you suggest I am sorry. Then I rather just add back the 8 bit controller and print

It is a shame to have this expensive controller and not be able to use it and be outperformed by a 16 dollar controller so I will try to get it working without going so deep in the tank as you want me to - it should not be necessary for a decent setup

Firmware retraction
I still cant figure out how this is applied, it would be great to have
Components
I will try another hotend as I also mistake this new thing to be cluttered and see if it helps
I have ordered a new extruder as well
Bowden tube
The 800 mm bowden has been my friend long time with no issues with 6mm retraction in marlin no problem for 5000 hours at least. Does the rrf not support the same setup?
As of capricorn I have that as well but find it to tight and have a medial solution with 1.9mm as should work fine. Its the same as I have on the other machine
The play in the fittings has been eliminated

Thanks for trying to help me one more time

/roy

Phaedrux

Perhaps you can post your configuration.h from Marlin along with your config.g from RepRapFirmware and we can compare to see if there is something amiss. Without giving useful information to us, you are only complaining, and not actually trying to find a solution.

I explained how to enable firmware retraction twice now. Here is a 3rd attempt at explaining: https://forum.duet3d.com/topic/5993/firmware-retraction-tuning-with-macros

pro3d

@phaedrux

I am all about giving useful information but dont know what before someone ask for it so I am sorry if it seams complaining - I am troubleshooting like crazy for long time now trying to find a solution

How am I not trying to find a solution?

The link you now posted gives me new info. I did not se this before and I have to put it aside for later

Here are all firmware info:
https://github.com/RoyBerntsenDesign/V-King/tree/master/Firmware Files

Phaedrux

Thanks for the config files, I will take a look at them.

Next, what thermistor are you using and what parameters have you configured? If the temperature is being misreported that could explain the additional oozing.

pro3d

@phaedrux

Also did you see this thread? looks like identical issues
https://forum.duet3d.com/topic/3998/retraction-issues-800mm-bowden-bondtech-bmg

pro3d

@phaedrux

Thermistor is what comes with the e3d V6 - Semitec GT something and configured with the online tool
Edit: M305 P1 T100000 B4388 C7.060000e-8 R4700

Phaedrux

@pro3d said in Duet/RRF Big printing problems:

@phaedrux

Also did you see this thread? looks like identical issues
https://forum.duet3d.com/topic/3998/retraction-issues-800mm-bowden-bondtech-bmg

Yes, I saw that thread.

Did you try the retraction tuning as David suggested in the thread?

dc42 ADMINISTRATORS 5 Feb 2018, 06:26
Some suggestions:

Are the blobs are occurring immediately before retractions and travel moves? if so then they are probably mostly retraction-related.
Increase extruder max speed in M203 to 3600 (i.e. 60mm/sec), and configure 60mm/sec retraction in speed in your slicer, or in M208 if you use firmware retraction
800mm is a long Bowden tube, and you will need to tune your retraction settings and pressure advance well to get good results
What retraction amounts have you tried? With no pressure advance applied and an 800mm Bowden tube I would expect you to need around 9mm retraction. Less if you use Capricorn tubing and/or pressure advance.
With a Bowden tube that long, Capricorn tubing may help significantly.
It's probably best to tune retraction using the Lite 6 first, because if you use too much retraction with the all-metal V6 you are likely to get an extruder blockage. When you have found a good combination of pressure advance and minimum needed retraction, you can try the same combination on the V6.
I suggest initially you use no pressure advance, to find the minimum retraction you need to avoid getting zits just before travel moves. When you have found that value, add pressure advance (try 0.2) and see how much you can reduce retraction before the zits reappear.
HTH David

It also looks like someone commented that switch to capricorn tubing helped greatly for such a long bowden tube.

Phaedrux

@pro3d said in Duet/RRF Big printing problems:

@phaedrux

Thermistor is what comes with the e3d V6 - Semitec GT something and configured with the online tool
Edit: M305 P1 T100000 B4388 C7.060000e-8 R4700

That looks correct. Now have you run a PID tune on the hotend?

pro3d

@phaedrux

Yes PID has been applied

As of the tip in the thread I have not been digging to much into it. I disabled PA now to start over again so I will take a closer look. The tube I have should work just fine as for X1000 hours before I think? It is a 1.9mm tube I like to use as the Capricorn can be to tight for my taste

What I dont understand is that the proven settings from marlin will not work with rrf - like the retraction and speed and temp and everything. Does this have to do with that rrf use relative extrusion? Can I turn this off?

pro3d

@phaedrux

I will try to change the hotend. I mistake it has some issues although new

Phaedrux

@pro3d said in Duet/RRF Big printing problems:

Does this have to do with that rrf use relative extrusion? Can I turn this off?

Yes you can switch to absolute extrusion if you like. You can change the command in the config.g and also the slicer.

Phaedrux

Just looking at the differences between your Marlin and RepRap configurations.

E acceleration Marlin=10000mm/s^2, RepRap=1000mm/s^2
E Jerk Marlin=15mm/s, RepRap=10mm/2

This would greatly slow down your retractions.

So here is my suggestions for what to change and test next.

M556 E1200
M201 E10000

Set retraction to 9mm at 60mm/s with pressure advance off.

Print a retraction test model, every 15 layers increase pressure advance from the console by 0.05.

dc42

Your thermistor config is incorrect, it should be B4725. See https://e3d-online.dozuki.com/Guide/V6+RepRap+Firmware+Configuration/26?lang=en. That means you have been printing at the wrong temperature. HTH David

pro3d

@dc42

Thanks - Does this mean the config online tool gives another value than what it should have?

Phaedrux

@dc42 said in Duet/RRF Big printing problems:

Your thermistor config is incorrect, it should be B4725. See https://e3d-online.dozuki.com/Guide/V6+RepRap+Firmware+Configuration/26?lang=en. That means you have been printing at the wrong temperature. HTH David

The configurator gives M305 P1 T100000 B4388 C7.060000e-8 R4700 when The E3D Semitek-104 GT2 option is selected. It looks like that may have been correct for firmware versions older than 1.16, but the configurator seems to have not been updated to give the new values for firmware versions 1.17 and above.

I recently swapped a burnt out PT100 sensor for the E3D Semitek GT2 and used the values from the configurator for it, oddly enough I didn't notice any temperature related issues for the week or so I used it while waiting for a replacement PT100.

pro3d

@phaedrux

Nice catch about the E accel - I did not ever change this at any point in Marlin so I did not know its value. I will test your recommendations

pro3d

@phaedrux

How ever max accel is overided by these values in Marlin no?

#define DEFAULT_ACCELERATION 1000 // X, Y, Z and E acceleration for printing moves
#define DEFAULT_RETRACT_ACCELERATION 2000 // E acceleration for retracts
#define DEFAULT_TRAVEL_ACCELERATION 1000 // X, Y, Z acceleration for travel (non printing) moves

Phaedrux

@pro3d That would depend on how the slicer is sending acceleration values, if you are using those settings.

Still, the file you posted has higher limits set than 1000,2000

/**
 * Default Acceleration (change/s) change = mm/s
 * Override with M204
 *
 *   M204 P    Acceleration
 *   M204 R    Retract Acceleration
 *   M204 T    Travel Acceleration
 */
#define DEFAULT_ACCELERATION          1500    // X, Y, Z and E acceleration for printing moves
#define DEFAULT_RETRACT_ACCELERATION  3000    // E acceleration for retracts
#define DEFAULT_TRAVEL_ACCELERATION   1500    // X, Y, Z acceleration for travel (non printing) moves