Hello,
I'm still fairly new to 3D printing but have done a lot of prints over the past year making prototype or replacement machine parts drawing them in Freecad and making them on a Fusion3 F410 printer. The problem I have been seeing lately has to do with the slicing and has only appeared with the last update to version 4, and now with version 5. It seems to affect round sections the most but I do have some issues with everything else. What happens is when a part is sliced, I get a nice skirt, and then what looks like Morse code for an outline of the part. The final slice render looks like a jigsaw puzzle of features (Inner and outer layer, infill, solid layer). I have tried changing settings as I can but nothing changes the slice that I can find. In desperation I have tried printing the part and found it prints as sliced-chunky and missing sections and worse. What can I do to fix this?
Thank you!
Attached below are snips of the part, render and first layer outline. I have also attached the factory file.
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Chriselfert
- Posts: 3
- Joined: Tue May 09, 2023 3:24 pm
[SOLVED] Slicing problem
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Last edited by Chriselfert on Thu May 11, 2023 3:34 pm, edited 1 time in total.
Re: Slicing problem
I didn't see any attachments. Can you try adding them again?
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Chriselfert
- Posts: 3
- Joined: Tue May 09, 2023 3:24 pm
Re: Slicing problem
Here's the factory file I hope. It wouldn't attach with the photos above for some reason
Last edited by Chriselfert on Thu May 11, 2023 3:36 pm, edited 1 time in total.
Re: Slicing problem
I think you might have the same issue described here:
viewtopic.php?p=63763
In short, it looks like that F410 profile uses G90 in the starting script, but doesn't issue a M83 afterwards. That's a problem since their profile is set to use relative extrusion distances on the Output tab. G90 changes both movement and extrusion to absolute mode (see: https://marlinfw.org/docs/gcode/G090.html).
So either add a M83 at the end of the starting script to restore relative extrusion, or disable relative extrusion on the Output tab. The first option is probably the safest.
viewtopic.php?p=63763
In short, it looks like that F410 profile uses G90 in the starting script, but doesn't issue a M83 afterwards. That's a problem since their profile is set to use relative extrusion distances on the Output tab. G90 changes both movement and extrusion to absolute mode (see: https://marlinfw.org/docs/gcode/G090.html).
So either add a M83 at the end of the starting script to restore relative extrusion, or disable relative extrusion on the Output tab. The first option is probably the safest.
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Chriselfert
- Posts: 3
- Joined: Tue May 09, 2023 3:24 pm
Re: Slicing problem
OK, it looks to be a relative/absolute position issue. I unchecked "Use relative position" and it came out looking good. I'll have to try a print and see how it works.
Here's a couple more samples of some of my parts showing the slicing using the exact same process as the first part. It seems that it only messes up on round parts, showing infill being outside and missing perimeters, giving the prints non-solid and very irregular surfaces. Does anyone know why this is an issue?
Here's a couple more samples of some of my parts showing the slicing using the exact same process as the first part. It seems that it only messes up on round parts, showing infill being outside and missing perimeters, giving the prints non-solid and very irregular surfaces. Does anyone know why this is an issue?
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Re: Slicing problem
The reasoning was already explained above. The starting script had a G90 which tells the machine to use absolute extrusion distances, but their S3D profile was set to use relative extrusion distances. That means the machine basically misinterprets every extrusion command. The S3D preview is designed to simulate the machine, so it is displaying that misrepresentation intentionally so that you know there's a problem.
