<p>I've been able to reduce stringing by reducing the nozzle temp in 2°C increments until it goes away.
You'll also want to increase your retraction settings a bit.</p>

<p>The problem is caused by the plastic being too hot and oozing out of the nozzle - it's a bit too runny.</p>

<p>Search Thingiverse for Heat Towers.  You'll need to edit the G-code so that your printer adjusts the nozzle temp at each layer.  That will give you a really good indication of the best temperature for the given material.</p>

<p>Keep in mind you'll want to print it for each new brand (and sometimes color) of filament.</p>

CC BY-SA 4.0
2018-08-16T13:13:05.363Z
Good note about different colors from the same manufacturer sometimes having different ideal temperatures. I find that rainbow colors are pretty uniform, but black, white, and silver can vary greatly.
Davo
CC BY-SA 4.0
2018-08-16T02:05:39.937Z
2018-08-16T02:05:39.937Z
Dave Corbett
<p>How can I avoid the irregularities and stringing in the print.
Printer Used: Fortus 450mc</p>

<p>Model: PC</p>

<p>Model tip: T10</p>

<p>Support tip: T12SR</p>

<p>Support: SR-100</p>

<p>Slice Height: 0.0050 in</p>

<p>I have printed two objects using Grabcad print (with Insight)
1) Voronoi bear:
The voronoi bear has missing layers/unattached layer at its bottom everything else seems OK. I do notice  a bit of stringing though.
<a href="https://i.sstatic.net/GvOQE.jpg" rel="noreferrer"><img src="https://i.sstatic.net/GvOQE.jpg" alt="Top view of voronoi bear"></a>
<a href="https://i.sstatic.net/btwHY.jpg" rel="noreferrer"><img src="https://i.sstatic.net/btwHY.jpg" alt="Side view"></a>
<a href="https://i.sstatic.net/AKYE3.jpg" rel="noreferrer"><img src="https://i.sstatic.net/AKYE3.jpg" alt="Missing/uattached layers"></a>
2) Cylinder with hollow channels:
The cylinder has a lot of visible stringing and one of the channels is slightly deformed. 
<a href="https://i.sstatic.net/jZPxH.jpg" rel="noreferrer"><img src="https://i.sstatic.net/jZPxH.jpg" alt="Top View"></a>
<a href="https://i.sstatic.net/huROn.jpg" rel="noreferrer"><img src="https://i.sstatic.net/huROn.jpg" alt="Front View"></a>
<a href="https://i.sstatic.net/usNsN.jpg" rel="noreferrer"><img src="https://i.sstatic.net/usNsN.jpg" alt="stringing"></a>
Please refer to the attached images.</p>

<p>Please let me know if any additional details are needed.</p>

CC BY-SA 4.0
2018-08-14T09:59:37.210Z
Nice post, description and photos. However, what is the question? Could you edit your post and explicitly state a question?
Greenonline
CC BY-SA 4.0
2018-08-15T08:14:40.450Z
Can you add print settings, and also list what calibration steps you have performed.
Sean Houlihane
CC BY-SA 4.0
2018-08-15T19:09:43.290Z
You'll need to fine tune your retraction settings to eliminate (or at least minimize) stringing. What slicer are you using?
Chris G. Williams
CC BY-SA 4.0
2020-10-01T13:12:31.287Z
Did I miss something, or was the filament material never mentioned?  This is a whole different issue with some materials, such as PETG.
Perry Webb
<fdm><calibration><print-material>
How to avoid stringing?
Veda
# How to avoid stringing?

(Asked by: username_0 on 2018-08-13)

How can I avoid the irregularities and stringing in the print.
Printer Used: Fortus 450mc

Model: PC

Model tip: T10

Support tip: T12SR

Support: SR-100

Slice Height: 0.0050 in

I have printed two objects using Grabcad print (with Insight)
1) Voronoi bear:
The voronoi bear has missing layers/unattached layer at its bottom everything else seems OK. I do notice a bit of stringing though.
[![Top view of voronoi bear](https://i.sstatic.net/GvOQE.jpg)](https://i.sstatic.net/GvOQE.jpg)
[![Side view](https://i.sstatic.net/btwHY.jpg)](https://i.sstatic.net/btwHY.jpg)
[![Missing/uattached layers](https://i.sstatic.net/AKYE3.jpg)](https://i.sstatic.net/AKYE3.jpg)
2) Cylinder with hollow channels:
The cylinder has a lot of visible stringing and one of the channels is slightly deformed.
[![Top View](https://i.sstatic.net/jZPxH.jpg)](https://i.sstatic.net/jZPxH.jpg)
[![Front View](https://i.sstatic.net/huROn.jpg)](https://i.sstatic.net/huROn.jpg)
[![stringing](https://i.sstatic.net/usNsN.jpg)](https://i.sstatic.net/usNsN.jpg)
Please refer to the attached images.

Please let me know if any additional details are needed.

**Tags:** fdm, calibration, print-material
> **Comments:**
> **username_1**: Nice post, description and photos. However, what is the question? Could you edit your post and explicitly state a question?  
> **username_2**: Can you add print settings, and also list what calibration steps you have performed.  
> **username_3**: You'll need to fine tune your retraction settings to eliminate (or at least minimize) stringing. What slicer are you using?  
> **username_4**: Did I miss something, or was the filament material never mentioned?  This is a whole different issue with some materials, such as PETG.  

---

## 1 answers

### Answer by username_5 on 2018-08-16. Score: 4

I've been able to reduce stringing by reducing the nozzle temp in 2°C increments until it goes away.
You'll also want to increase your retraction settings a bit.

The problem is caused by the plastic being too hot and oozing out of the nozzle - it's a bit too runny.

Search Thingiverse for Heat Towers. You'll need to edit the G-code so that your printer adjusts the nozzle temp at each layer. That will give you a really good indication of the best temperature for the given material.

Keep in mind you'll want to print it for each new brand (and sometimes color) of filament.

> **Comments:**
> **username_6**: Good note about different colors from the same manufacturer sometimes having different ideal temperatures. I find that rainbow colors are pretty uniform, but black, white, and silver can vary greatly.  

---

