Thanks for checking. I doubled value and it still shows up in the gcode. Spiralize mode or standard, same thing...Its definitely not every layer, which is even weirder. Its almost like it hits a volumetric limit for the E value and resets throughout the whole code.
Thanks again for offering up a possible solution. You never know what small change can help sometime. Ill keep looking.
Where in the programming code of Cura would be a good place to start to change when the E value resets via a G92 E0 in the Gcode. I can reduce the number of times it restarts if i reduce the extrusion multiplier to lets say %. Its definitely hitting some limit then restarting somewhere. I just don't know why.
3 hours ago, mtnbkrrick said:Where in the programming code of Cura would be a good place to start to change when the E value resets via a G92 E0 in the Gcode.
This is where it decides to reset the extruder.
burtoogle, Thanks. That is exactly what Im looking for. Am i able to modify that in a text file in my cura installation, or do I need to recompile a "custom" cura just for me?
That is part of the CuraEngine which is a C++ program that does the actual slicing. It would need to be recompiled.
You could try switching to relative extrusion instead of absolute extrusion (see the Special Modes category). This will effectively remove the extruder resets, but has precision issues of its own.
Thanks everyone. I have a couple questions then. When I switch to 1% extrusion it takes a lot longer to get to the threshold where it needs to reset. Can the code just multiply the that e value again by 100% at the very end of the code? Maybe create a Virtual E or something?
Other thought, when I run the parts through prusa slicer or s3d, these do not show up? Would I be safe to assume they will have precision issues as well but are not addressing the issue?
Thanks again and I really appreciate your help and thoughts here.
Would anyone be willing to recompile the latest version of cura for me and put no limit to the extrusion distance for me?
I was looking into what type of programs i would need to do this, and seems out of my league. lol. I have attempted but am coming up short.
Thanks!
On 1/21/2020 at 1:48 AM, burtoogle said:That is part of the CuraEngine which is a C++ program that does the actual slicing. It would need to be recompiled.
How long and would you be willing to help with recompiling the latest Cura version but with an unlimited e value?
Sorry to have to ask. Greatly appreciated.
Can you not use relative extrusion as was suggested above?
20 minutes ago, burtoogle said:Can you not use relative extrusion as was suggested above?
We are using a large format printer that uses industrial controls and it runs using absolute and is the preferred method for the motion controller. I didn't know if it would be a fast thing to do or not. No worries if not. Thanks
It would also be possible to write a postprocessing script that would rewrite the E-values and remove the G92 commands. The upshot of that solution is that it will work with future updates of Cura.
3 hours ago, mtnbkrrick said:We are using a large format printer that uses industrial controls and it runs using absolute and is the preferred method for the motion controller.
Have you *tried* it though? Your large format printer should still support the M83 command:
47 minutes ago, ahoeben said:It would also be possible to write a postprocessing script that would rewrite the E-values and remove the G92 commands. The upshot of that solution is that it will work with future updates of Cura.
Yes. We are in the process of doing that now. That makes sense for future updates though. You are right.
Thanks!
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tinkergnome 927
Cura resets the e-coordinate on every layer AFAIK - and i guess what you noticed here is something similar for the "spiralize" mode. I'm pretty sure that's not the root cause of the shown problem though...
The recommendation in this video may be the solution:
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