<p>I think the solution in your self-answer is just a partial mitigation for an underlying problem, and your expectations for output quality are way too low.</p>

<p>From the pictures in the question, there's serious overextrusion and stringing going on. The stringing could be caused by a secondary problem (bad/insufficient retraction settings), but heavy overextrusion will cause there to be extreme residual pressure left between the extruder gear and the nozzle (especially in a bowden setup, though it's not clear what printer you're using or if it has a bowden tube) that retraction will be unlikely to sufficiently relieve, so it's also a characteristic consequence of overextrusion.</p>

<p>As Pᴀᴜʟsᴛᴇʀ2 noted in a comment, having the filament diameter set to 1.75 mm while your printer actually uses 3 mm filament could cause this. Cura (especially CuraEngine invoked via command line rather than the GUI) is particularly bad about getting this wrong if you don't pass the options in exactly the right way.</p>

<p>Note that lowering the infill percentage as you did would help get <em>somewhat</em> decent results with serious overextrusion, since the excess material has somewhere to go (into the unfilled part of the infill region). But you'll still be getting really bad (what I would call unacceptably bad) prints compared to what you could/should get.</p>

CC BY-SA 4.0
2019-08-18T22:15:28.807Z
2019-08-18T22:15:28.807Z
R.. GitHub STOP HELPING ICE
<p>Managed to solve it by lowering the temperature to 190C. I also lowered the infill down to 25%. Thanks for the advice!</p>

<p>I posted the make with results and settings on <a href="https://www.thingiverse.com/make:695806" rel="nofollow noreferrer">thingiverse</a>.</p>

CC BY-SA 4.0
2019-08-18T20:08:43.047Z
There's serious overextrusion and stringing going on here. You may have filament size wrong and retraction settings badly wrong. If so, it's possible that lowering the temp and infill (esp lower infill will partly compensate for overextrusion) made it print okay-ish, but I think your expectations are just really low.
R.. GitHub STOP HELPING ICE
CC BY-SA 4.0
2019-08-26T14:39:24.287Z
190°C is quite low for PLA. It won't be a strong part.
FarO
CC BY-SA 4.0
2019-08-18T11:34:50.390Z
2019-08-18T11:34:50.390Z
Stefan
<p>I am trying to print a <a href="https://www.thingiverse.com/thing:2755765" rel="nofollow noreferrer">12 hole Ocarina</a> I found on thingiverse. When printing I have to stop it around 25-30 layers because the edge of the shell is higher then the infill. </p>

<p><a href="https://i.sstatic.net/kMrn5.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/kMrn5.jpg" alt="Example 1"></a></p>

<p><a href="https://i.sstatic.net/PVHAO.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/PVHAO.jpg" alt="Example 2"></a></p>

<p><a href="https://www.codepile.net/pile/Z0Y3v986" rel="nofollow noreferrer">G-Code of first 30 layers</a></p>

<p>I tried changing the infill, wall size, speed and retraction settings to no avail. The settings of the example print were:</p>

<ul>
<li>100% infill</li>
<li>0.2mm layer height</li>
<li>40mm printing speed (average)</li>
<li>1mm shell thickness (results in 2 layers)</li>
<li>Automatic infill patern</li>
<li>Printed at 210C with 3mm PLA (<a href="https://www.conrad.nl/p/renkforce-pla300h1-filament-pla-kunststof-3-mm-grijs-1-kg-1093147" rel="nofollow noreferrer">like this one</a>)</li>
<li>Printed on a RF1000</li>
<li>Sliced with CuraEngine in Repetier-host V2.1.6.</li>
</ul>

<p>Does anyone know what might cause this and how I can prevent it from happening?</p>

<p>Any help is greatly appreciated! :)</p>

CC BY-SA 4.0
2019-08-12T20:54:39.847Z
What kind of temps are you running this at? Everything is melted, which would imply you've got this thing running hot. Also, what type of filament? I don't see you mention either in your question, which is VERY important in giving a diagnosis.
Pᴀᴜʟsᴛᴇʀ2
CC BY-SA 4.0
2019-08-12T21:13:35.723Z
My bad forgot to mention. I use PLA and print at 210C.
Stefan
CC BY-SA 4.0
2019-08-12T22:44:51.863Z
What size of nozzle are you using? What's your bed temp (if using a heated bed)?
Pᴀᴜʟsᴛᴇʀ2
CC BY-SA 4.0
2019-08-12T23:20:27.430Z
And are you sure you've got the printer set to print at 3mm and not 1.75mm for filament thickness? You are extruding *a lot* of material.
Pᴀᴜʟsᴛᴇʀ2
CC BY-SA 4.0
2019-08-13T14:35:51.983Z
PLA should be perfectly happy at 190-195.  That will help with the melt and sag.
Carl Witthoft
CC BY-SA 4.0
2019-08-13T18:22:56.690Z
Thanks for the help!
I got this printer second-hand and I believe the nozzle was replaced. The original one was 0.5mm however I'm not sure how to make sure the current one is aswell. I did check the settings and the filament thickness is 3mm.

The bed temp is 60C. I tried lowering the print temperature to 190, this does help with the sagging but didn't solve the problem of this print. The odd thing is that with other prints I haven't had any of these problems. At first I thought the infill percentage caused this (I'd never printed anything at 100%) but lowering the percentage doesn't help.
Stefan
CC BY-SA 4.0
2019-08-13T18:27:25.363Z
According to the manual:
Printing layer thickness: 0.05 - 0.3 mm.
Nozzle diameter: 0.5 mm
Stefan
CC BY-SA 4.0
2019-08-18T20:05:24.787Z
210 is a perfectly good temperature for PLA. Lower is harder to get right.
R.. GitHub STOP HELPING ICE
CC BY-SA 4.0
2019-08-18T22:13:36.180Z
Can you put the gcode on a better pastebin site? This one has a broken raw/download link making it virtually impossible to analyze the code.
R.. GitHub STOP HELPING ICE
CC BY-SA 4.0
2019-08-26T14:39:02.147Z
Do a proper 3D printer calibration: https://gist.github.com/dewi-ny-je/39934df3ec76f3dc683e6d128a97b424
FarO
<ultimaker-cura><pla><g-code>
Raised shell edges on ocarina print. RF1000 sliced with Cura Engine
Stefan
# Raised shell edges on ocarina print. RF1000 sliced with Cura Engine

(Asked by: username_0 on 2019-08-12)

I am trying to print a [12 hole Ocarina](https://www.thingiverse.com/thing:2755765) I found on thingiverse. When printing I have to stop it around 25-30 layers because the edge of the shell is higher then the infill.

[![Example 1](https://i.sstatic.net/kMrn5.jpg)](https://i.sstatic.net/kMrn5.jpg)

[![Example 2](https://i.sstatic.net/PVHAO.jpg)](https://i.sstatic.net/PVHAO.jpg)

[G-Code of first 30 layers](https://www.codepile.net/pile/Z0Y3v986)

I tried changing the infill, wall size, speed and retraction settings to no avail. The settings of the example print were:

* 100% infill
* 0.2mm layer height
* 40mm printing speed (average)
* 1mm shell thickness (results in 2 layers)
* Automatic infill patern
* Printed at 210C with 3mm PLA ([like this one](https://www.conrad.nl/p/renkforce-pla300h1-filament-pla-kunststof-3-mm-grijs-1-kg-1093147))
* Printed on a RF1000
* Sliced with CuraEngine in Repetier-host V2.1.6.

Does anyone know what might cause this and how I can prevent it from happening?

Any help is greatly appreciated! :)

**Tags:** ultimaker-cura, pla, g-code
> **Comments:**
> **username_1**: What kind of temps are you running this at? Everything is melted, which would imply you've got this thing running hot. Also, what type of filament? I don't see you mention either in your question, which is VERY important in giving a diagnosis.  
> **username_0**: My bad forgot to mention. I use PLA and print at 210C.  
> **username_1**: What size of nozzle are you using? What's your bed temp (if using a heated bed)?  
> **username_1**: And are you sure you've got the printer set to print at 3mm and not 1.75mm for filament thickness? You are extruding *a lot* of material.  
> **username_2**: PLA should be perfectly happy at 190-195.  That will help with the melt and sag.  
> **username_0**: Thanks for the help! I got this printer second-hand and I believe the nozzle was replaced. The original one was 0.5mm however I'm not sure how to make sure the current one is aswell. I did check the settings and the filament thickness is 3mm.  The bed temp is 60C. I tried lowering the print temperature to 190, this does help with the sagging but didn't solve the problem of this print. The odd thing is that with other prints I haven't had any of these problems. At first I thought the infill percentage caused this (I'd never printed anything at 100%) but lowering the percentage doesn't help.  
> **username_0**: According to the manual: Printing layer thickness: 0.05 - 0.3 mm. Nozzle diameter: 0.5 mm  
> **username_3**: 210 is a perfectly good temperature for PLA. Lower is harder to get right.  
> **username_3**: Can you put the gcode on a better pastebin site? This one has a broken raw/download link making it virtually impossible to analyze the code.  
> **username_4**: Do a proper 3D printer calibration: https://gist.github.com/dewi-ny-je/39934df3ec76f3dc683e6d128a97b424  

---

## 2 answers

### Answer by username_3 on 2019-08-18. Score: 1 | Accepted answer

I think the solution in your self-answer is just a partial mitigation for an underlying problem, and your expectations for output quality are way too low.

From the pictures in the question, there's serious overextrusion and stringing going on. The stringing could be caused by a secondary problem (bad/insufficient retraction settings), but heavy overextrusion will cause there to be extreme residual pressure left between the extruder gear and the nozzle (especially in a bowden setup, though it's not clear what printer you're using or if it has a bowden tube) that retraction will be unlikely to sufficiently relieve, so it's also a characteristic consequence of overextrusion.

As Pᴀᴜʟsᴛᴇʀ2 noted in a comment, having the filament diameter set to 1.75 mm while your printer actually uses 3 mm filament could cause this. Cura (especially CuraEngine invoked via command line rather than the GUI) is particularly bad about getting this wrong if you don't pass the options in exactly the right way.

Note that lowering the infill percentage as you did would help get *somewhat* decent results with serious overextrusion, since the excess material has somewhere to go (into the unfilled part of the infill region). But you'll still be getting really bad (what I would call unacceptably bad) prints compared to what you could/should get.


---

### Answer by username_0 on 2019-08-18. Score: 1

Managed to solve it by lowering the temperature to 190C. I also lowered the infill down to 25%. Thanks for the advice!

I posted the make with results and settings on [thingiverse](https://www.thingiverse.com/make:695806).

> **Comments:**
> **username_3**: There's serious overextrusion and stringing going on here. You may have filament size wrong and retraction settings badly wrong. If so, it's possible that lowering the temp and infill (esp lower infill will partly compensate for overextrusion) made it print okay-ish, but I think your expectations are just really low.  
> **username_4**: 190°C is quite low for PLA. It won't be a strong part.  

---

