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I am a new to 3D printing, somehow, the infill of my print compiled by Cura 4.5 is weak. I print with generic PLA (FD plast) on 200 °C. See image below:

PLA printed part with failed infill

Print details: I have a Zonestar Z6FB which I use together with Cura 4.5. I print in PLA at 200 °C (Cura default for PLA). The print bed is set to 60 °C. I use a print cooling fan at 100 %. The layer height I set to 0.1 mm, the line width (wall thikness 0.8 mm?) from the 0.4 mm nozzle. The Printing Speed is set to 60 mm/s for everything. My retraction is unknown.

0scar
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Marat Zakirov
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  • It looks like the printer is under extruding, the 2 walls barely touch, this can also lead to the infill pattern you see. You could try to [calibrate the extruder](/q/6483/). You can also try printing a little slower. – 0scar May 04 '20 at 21:25

1 Answers1

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You problem clearly under extrude which mean the plastic not flow as much as it should be. I face this problem recently here my step to solve.

  1. Tune e step (do this first)
  2. Add more temp. to nozzle (so plastic will melt and flow faster)
  3. Slow down print speed.
  4. Change nozzle and clean whole hotend.
M lab
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  • Hi! Thank you for answer. I have several q to you. "e" step did you mean extruder Flow percent? I am already print at 200 celsius, I recently print at 180 and it sems to be better with PLA. Cleaning Hot end from dust? – Marat Zakirov May 05 '20 at 05:08
  • It’s extruder step per milliliter calibration. – M lab May 05 '20 at 08:46
  • Some plastic just burn out and become a solid material that block the nozzle. – M lab May 05 '20 at 08:48
  • I cleatly see that walls are definitly ok, how it is possible to make sily infill and pretty well walls? – Marat Zakirov May 05 '20 at 09:54
  • I don’t know why last time I face this problem I’ve try everything, still not working then I change nozzle it suddenly work me be nozzle just got partial clogging with allow low rate flow. – M lab May 05 '20 at 09:58
  • The infill eventually have higher print speed. Try to fix it step by step as my answer might help. – M lab May 05 '20 at 09:59
  • @MaratZakirov Your walls don't look okay! Clearly under extruded. – 0scar May 05 '20 at 22:39
  • "Tune the e step" is always wrong. Don't do that. – R.. GitHub STOP HELPING ICE Jun 04 '20 at 03:42
  • @R..GitHubSTOPHELPINGICE why? the E steps are not like the XYZ steps, they need calibration because the hobbed bolt penetrates differently in different materials and you need to compensate for the different effective bolt radius. – FarO Jun 04 '20 at 12:36
  • That's why you use a per material flow modifier rather than an esteps change that's a function of both the machine and the material. – R.. GitHub STOP HELPING ICE Jun 04 '20 at 12:39
  • @R..GitHubSTOPHELPINGICE I think it difference scenario here. E_step is relate to G-code to determine how many pulse to achieve corresponding distant so we can tune with G-code command. If you adjust flow multiplier in slicer, it will affect only G-code outout from slicer either if you adjust on UI it will not affect when you print with SD Card. For conclusion, tune E-Step with G-Code and use flow multiplier for manual fine-tune. – M lab Jun 15 '20 at 09:30
  • I changed extruder block to Titan it somehow helped do not sure if that eliminated this issue totally. So I definitly add 5) Change extruder block to Titan – Marat Zakirov Nov 09 '21 at 11:55