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Strange surface pattern since MK3 R3 upgrade  

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motocoder
(@motocoder)
Trusted Member
Strange surface pattern since MK3 R3 upgrade

I upgraded my MK3 to the new R3 extruder design. At the same time, I replaced the hotend fan with a higher power version (Sunon), and put a new PTFE tube in the hotend. I am now getting the surface pattern shown in the video. I am interested if people have any ideas what might be causing this.

Here is a video where I tilt the part in the light so that you can see the pattern clearly. It is quite pronounced, and much worse than any surface defect I've observed before with this printer.

Respondido : 01/08/2018 8:15 pm
Rosparovac
(@rosparovac)
Estimable Member
Re: Strange surface pattern since MK3 R3 upgrade

Do you try this?
https://github.com/prusa3d/Prusa-Firmware/wiki/Extruder-linearity-correction-calibration

University: MK2S upgraded to MK3 with MMU2.0
Home: MK3
Materials: ABS; ASA; PETG; PET; PLA; Nylon; Nylon Carbon; CPE;
SW: Freecad 0.18; Slicer PE And still generating more troubles than whole forum together.

Respondido : 01/08/2018 10:23 pm
motocoder
(@motocoder)
Trusted Member
Topic starter answered:
Re: Strange surface pattern since MK3 R3 upgrade


Do you try this?
https://github.com/prusa3d/Prusa-Firmware/wiki/Extruder-linearity-correction-calibration

Yeah, this is not the same thing.

Respondido : 01/08/2018 10:49 pm
Rosparovac
(@rosparovac)
Estimable Member
Re: Strange surface pattern since MK3 R3 upgrade

Ok I have the same issue and this linearization helps me. So nothing else how can I help you.... GL

University: MK2S upgraded to MK3 with MMU2.0
Home: MK3
Materials: ABS; ASA; PETG; PET; PLA; Nylon; Nylon Carbon; CPE;
SW: Freecad 0.18; Slicer PE And still generating more troubles than whole forum together.

Respondido : 01/08/2018 10:56 pm
motocoder
(@motocoder)
Trusted Member
Topic starter answered:
Re: Strange surface pattern since MK3 R3 upgrade


Ok I have the same issue and this linearization helps me. So nothing else how can I help you.... GL

Sorry, I should have been more specific. I printed teh e-corr tower, and the banding never goes away (the nature of it does change somewhat). Prior to the R3 upgrade, the e-corr tower showed greatly reduced banding around 1.08 - don't see that here. Also, the surface artifact I see here is different - more of a diagonal checkerboard pattern than the diagonal lines.

Thanks for the suggestion anyway - it is appreciated.

Respondido : 01/08/2018 11:27 pm
Rosparovac
(@rosparovac)
Estimable Member
Re: Strange surface pattern since MK3 R3 upgrade

Ok some general suggestion did you check oall of theese?

Boundtech gear can do you issue.

University: MK2S upgraded to MK3 with MMU2.0
Home: MK3
Materials: ABS; ASA; PETG; PET; PLA; Nylon; Nylon Carbon; CPE;
SW: Freecad 0.18; Slicer PE And still generating more troubles than whole forum together.

Respondido : 01/08/2018 11:39 pm
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