<p>You should reduce the air gap option called "Raft Air Gap". Printing ABS optimally requires an enclosure of the printer, wind and draft cause temperature changes which could lead to layer separation.</p>

CC BY-SA 4.0
2018-11-11T08:18:01.967Z
Thanks for the airgap info. Will try that shortly. Re enclosures, my understanding is the problem gets worse the taller the print (further from heat bed). This print object is just a test, whereas the actual items I need to ABS print are under 8mm in height, so should be fine, but currently have the same problem.
iCollect.it Ltd
CC BY-SA 4.0
2018-11-11T17:37:10.520Z
Reducing the airgap appears to have solved the immediate problem of the object separating from the raft. Many thanks
iCollect.it Ltd
CC BY-SA 4.0
2018-11-13T12:00:11.900Z
strictly speaking, Enclosure is not *needed* but it *helps*
Trish
CC BY-SA 4.0
2020-05-03T22:43:56.157Z
I had the same problem and this solved it. I also needed to reduce the "Support Z Distance" (distance from the top/bottom of the support structure to the print) to stop the supports from curling off.
ianmcook
CC BY-SA 4.0
2018-11-10T21:43:44.610Z
2018-11-13T12:34:00.387Z
2018-11-13T12:34:00.387Z
0scar
<p>I have been have a problem printing ABS with Cura on an Ender 3. </p>

<p>I am getting good bed adhesion on the raft, but the object on top of the raft easily curls off it. See photo below. </p>

<p>Settings:</p>

<ul>
<li>Bed 110 &deg;C</li>
<li>Nozzle 260 &deg;C</li>
<li>Fan 0 % speed</li>
</ul>

<p>How do you control how strongly the raft adheres to the object in Cura?</p>

<p><img src="https://i.sstatic.net/41oOu.jpg" alt="Curling up from raft"></p>

CC BY-SA 4.0
2018-11-10T22:06:44.050Z
Have you checked to see how straight your bed is?
Pᴀᴜʟsᴛᴇʀ2
CC BY-SA 4.0
2018-11-11T08:13:47.463Z
@Paulster2: the bed is perfectly level, hence the very solid raft adhesion. Apparently it is the air gap setting according to Oscar below.
iCollect.it Ltd
CC BY-SA 4.0
2018-11-11T12:53:57.230Z
Please realize the difference between "level" and "straight". Have you put a straight edge on the bed to ensure it is flat all the way across, in all directions?
Pᴀᴜʟsᴛᴇʀ2
CC BY-SA 4.0
2018-11-11T22:42:57.207Z
@Paulster2: I misspoke. I meant straight & level, not warped etc. The flat raft indicates that. The airgap suggestion below worked.
iCollect.it Ltd
<ultimaker-cura><adhesion><creality-ender-3><rafts>
Getting a Cura Raft to stick to the object more firmly (for ABS)
iCollect.it Ltd
# Getting a Cura Raft to stick to the object more firmly (for ABS)

(Asked by: username_0 on 2018-11-10)

I have been have a problem printing ABS with Cura on an Ender 3.

I am getting good bed adhesion on the raft, but the object on top of the raft easily curls off it. See photo below.

Settings:

* Bed 110 °C
* Nozzle 260 °C
* Fan 0 % speed

How do you control how strongly the raft adheres to the object in Cura?

![Curling up from raft](https://i.sstatic.net/41oOu.jpg)

**Tags:** ultimaker-cura, adhesion, creality-ender-3, rafts
> **Comments:**
> **username_1**: Have you checked to see how straight your bed is?  
> **username_0**: @Paulster2: the bed is perfectly level, hence the very solid raft adhesion. Apparently it is the air gap setting according to Oscar below.  
> **username_1**: Please realize the difference between "level" and "straight". Have you put a straight edge on the bed to ensure it is flat all the way across, in all directions?  
> **username_0**: @Paulster2: I misspoke. I meant straight & level, not warped etc. The flat raft indicates that. The airgap suggestion below worked.  

---

## 1 answers

### Answer by username_2 on 2018-11-10. Score: 6 | Accepted answer

You should reduce the air gap option called "Raft Air Gap". Printing ABS optimally requires an enclosure of the printer, wind and draft cause temperature changes which could lead to layer separation.

> **Comments:**
> **username_0**: Thanks for the airgap info. Will try that shortly. Re enclosures, my understanding is the problem gets worse the taller the print (further from heat bed). This print object is just a test, whereas the actual items I need to ABS print are under 8mm in height, so should be fine, but currently have the same problem.  
> **username_0**: Reducing the airgap appears to have solved the immediate problem of the object separating from the raft. Many thanks  
> **username_3**: strictly speaking, Enclosure is not *needed* but it *helps*  
> **username_4**: I had the same problem and this solved it. I also needed to reduce the "Support Z Distance" (distance from the top/bottom of the support structure to the print) to stop the supports from curling off.  

---

