<p>I've followed the link in the question and exported the dispenser box and sliced it in Ultimaker Cura 4.12.1 and it will slice just fine.</p>
<p><a href="https://i.sstatic.net/8bzp6.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/8bzp6.jpg" alt="enter image description here" /></a></p>
<hr />
<p><em>From a comment on the answer from the OP I've learned later that the model has been fixed. So the issue was related to the model/STL file, not an issue with Cura.</em></p>

CC BY-SA 4.0
2021-12-02T00:17:50.617Z
That is because I've fixed the problem in the project. I've awarded the right answer for the effort.
user3347814
CC BY-SA 4.0
2021-11-30T17:57:56.610Z
2021-12-02T06:15:09.293Z
2021-12-02T06:15:09.293Z
0scar
<p>I am making this <a href="https://cad.onshape.com/documents/97c0bff4438703fb46eab336/w/f9d9fd6b8648b1738356fc17/e/875b5b62d7deed4076b9d8c3?renderMode=0&amp;uiState=615b591d20bf03323f3e1f55" rel="nofollow noreferrer">dog feeder</a>.</p>
<p>My goal is to 3D print it using an Ender 3 V2. I am using Cura to slice it.</p>
<p>When I slice it, though, Cura does not see the Top part (Dispenser box) as a solid piece. And when I am slicing it, it does not create an infill for the ramp. I have tried using the infill support option and setting the infill overhang angle to 0, but it still does not create infill support on the ramp. Here are some prints:</p>
<p><a href="https://i.sstatic.net/pDApW.jpg" rel="nofollow noreferrer" title="Notice that there is no infill under the ramp#1"><img src="https://i.sstatic.net/pDApW.jpg" alt="Notice that there is no infill under the ramp#1" title="Notice that there is no infill under the ramp#1" /></a></p>
<p><a href="https://i.sstatic.net/74iEy.jpg" rel="nofollow noreferrer" title="Notice that there is no infill under the ramp#2"><img src="https://i.sstatic.net/74iEy.jpg" alt="Notice that there is no infill under the ramp#2" title="Notice that there is no infill under the ramp#2" /></a></p>
<p>Notice that there is no infill under the ramp.</p>
<p>How do I make Cura understand that this is a solid piece?</p>

CC BY-SA 4.0
2021-10-04T20:22:38.850Z
I'm not an expert at this and maybe someone else will have better insights, but it seems that you did not build it as a solid piece.
agarza
CC BY-SA 4.0
2021-10-04T20:29:15.413Z
I'm also no expert but you can use Meshmixer to make it a solid or import it into Blender and apply a solidify modifier to the mesh.
Tristan Adams
CC BY-SA 4.0
2021-10-05T12:19:03.070Z
Is that a set in Cura that could fix this?
user3347814
CC BY-SA 4.0
2021-10-16T22:11:05.380Z
Unrelated - consider that your plastic might not be food-safe.
Criggie
CC BY-SA 4.0
2021-10-17T15:52:21.643Z
It is standard PLA. How do I find this out?
user3347814
CC BY-SA 4.0
2022-10-01T01:41:47.333Z
@user3347814 "Another major concern about PLA being food safe is the tiny holes and cracks that are usually created during 3D printing. These holes and cracks can provide a place for the harmful germs and ground for bacteria to grow and can be quite dangerous in the future." Plus another couple points at https://3dmonstr.com/is-pla-food-safe/.
Dima
<ultimaker-cura><slicing><infill>
How do I fix infill support in Cura?
user3347814
# How do I fix infill support in Cura?

(Asked by: username_0 on 2021-10-04)

I am making this [dog feeder](https://cad.onshape.com/documents/97c0bff4438703fb46eab336/w/f9d9fd6b8648b1738356fc17/e/875b5b62d7deed4076b9d8c3?renderMode=0&uiState=615b591d20bf03323f3e1f55).

My goal is to 3D print it using an Ender 3 V2. I am using Cura to slice it.

When I slice it, though, Cura does not see the Top part (Dispenser box) as a solid piece. And when I am slicing it, it does not create an infill for the ramp. I have tried using the infill support option and setting the infill overhang angle to 0, but it still does not create infill support on the ramp. Here are some prints:

[![Notice that there is no infill under the ramp#1](https://i.sstatic.net/pDApW.jpg "Notice that there is no infill under the ramp#1")](https://i.sstatic.net/pDApW.jpg "Notice that there is no infill under the ramp#1")

[![Notice that there is no infill under the ramp#2](https://i.sstatic.net/74iEy.jpg "Notice that there is no infill under the ramp#2")](https://i.sstatic.net/74iEy.jpg "Notice that there is no infill under the ramp#2")

Notice that there is no infill under the ramp.

How do I make Cura understand that this is a solid piece?

**Tags:** ultimaker-cura, slicing, infill
> **Comments:**
> **username_1**: I'm not an expert at this and maybe someone else will have better insights, but it seems that you did not build it as a solid piece.  
> **username_2**: I'm also no expert but you can use Meshmixer to make it a solid or import it into Blender and apply a solidify modifier to the mesh.  
> **username_0**: Is that a set in Cura that could fix this?  
> **username_3**: Unrelated - consider that your plastic might not be food-safe.  
> **username_0**: It is standard PLA. How do I find this out?  
> **username_4**: @user3347814 "Another major concern about PLA being food safe is the tiny holes and cracks that are usually created during 3D printing. These holes and cracks can provide a place for the harmful germs and ground for bacteria to grow and can be quite dangerous in the future." Plus another couple points at https://3dmonstr.com/is-pla-food-safe/.  

---

## 1 answers

### Answer by username_5 on 2021-11-30. Score: 1 | Accepted answer

I've followed the link in the question and exported the dispenser box and sliced it in Ultimaker Cura 4.12.1 and it will slice just fine.

[![enter image description here](https://i.sstatic.net/8bzp6.jpg)](https://i.sstatic.net/8bzp6.jpg)

---

*From a comment on the answer from the OP I've learned later that the model has been fixed. So the issue was related to the model/STL file, not an issue with Cura.*

> **Comments:**
> **username_0**: That is because I've fixed the problem in the project. I've awarded the right answer for the effort.  

---

