<p>You can test different print settings. Trying to visualize, but I believe you can increase the <strong>perimeter lines</strong>, since there is a hole, this will increase the resistance in that area. Or try to change the <strong>orientation</strong> with which the part will be printed</p>

CC BY-SA 4.0
2019-01-31T05:09:29.687Z
Hello thanks for your input, I am trying to find how to increase the perimeter line in Fusion360, where is it? :)
Manolo
CC BY-SA 4.0
2019-01-31T05:50:10.380Z
@Manolo These settings are made inside the CURA (**shell settings**)
3D TECH BRASIL
CC BY-SA 4.0
2019-01-30T23:21:57.763Z
2019-01-30T23:21:57.763Z
3D TECH BRASIL
<p>You can use a washer between the screw head and the plastic material to distribute the load</p>

<p>In my designs I also put in a depression to fit the washer so that it sits flush with the resultant surface.   </p>

<p><a href="https://i.sstatic.net/2Mh31.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/2Mh31.png" alt="Cad design with recessed washer holes"></a></p>

CC BY-SA 4.0
2019-01-31T05:10:10.547Z
Thanks for your reply, this is a good idea, I will try to do that as well.
Manolo
CC BY-SA 4.0
2019-01-31T01:06:48.710Z
2019-01-31T01:06:48.710Z
user77232
<p>In order to add localised extra walls, I will sometimes <em>cut</em> a torus shape around the part that I want to strengthen. This can result in n*wall, infill, n*wall, void, n*wall.</p>

<p>See the images in this <a href="https://3dprinting.stackexchange.com/a/7022/4927">answer</a> if the description is not clear.</p>

CC BY-SA 4.0
2019-01-31T17:06:56.277Z
2019-01-31T17:06:56.277Z
Sean Houlihane
<p>I made some 3D printed supports for tools, using screws to fix it to the wall, some of them broken because of the screw forces. Is there a way to reinforce only the screw holes where it will have more stress/compress? I am using PLA, Fusion 360 and Ultimaker Cura.</p>

CC BY-SA 4.0
2019-01-30T22:04:53.403Z
you might want to look at the slicing too
Trish
CC BY-SA 4.0
2019-01-30T22:09:07.287Z
Welcome to 3dPrinting.SE! I'm not completely understanding what you are trying to reinforce? Are they just holes which the screw goes through? Or are they actual threads you are printing which you need to reinforce? Could you provide a picture of the area you are working with?
Pᴀᴜʟsᴛᴇʀ2
CC BY-SA 4.0
2019-01-31T07:23:03.957Z
This question is not very clear, are you interested in local increase of the infill (see e.g. [this question](/q/6522/)), dimensional hole accuracy or techniques to design support fixtures/lugs?
0scar
CC BY-SA 4.0
2019-01-31T07:52:29.427Z
Thanks for your reply Oscar, the e.g. you shared here is exactly what I need. I think you understand the question very well. Cheers.
Manolo
CC BY-SA 4.0
2019-01-31T10:30:36.987Z
Looking at the answers, you are after local strengthening, this can be done by changing the infill percentage around holes and is described in [this question](/q/6522/); this could imply that this is a duplicate.
0scar
CC BY-SA 4.0
2019-01-31T18:56:06.920Z
Are you using screws similar to drywall screws which have a flat head that tapers down to the screw or a pan head screw which usually has a rounded head and flat bottom?
tjb1
<fusion360>
Reinforce screw holes
Manolo
# Reinforce screw holes

(Asked by: username_0 on 2019-01-30)

I made some 3D printed supports for tools, using screws to fix it to the wall, some of them broken because of the screw forces. Is there a way to reinforce only the screw holes where it will have more stress/compress? I am using PLA, Fusion 360 and Ultimaker Cura.

**Tags:** fusion360
> **Comments:**
> **username_1**: you might want to look at the slicing too  
> **username_2**: Welcome to 3dPrinting.SE! I'm not completely understanding what you are trying to reinforce? Are they just holes which the screw goes through? Or are they actual threads you are printing which you need to reinforce? Could you provide a picture of the area you are working with?  
> **username_3**: This question is not very clear, are you interested in local increase of the infill (see e.g. [this question](/q/6522/)), dimensional hole accuracy or techniques to design support fixtures/lugs?  
> **username_0**: Thanks for your reply Oscar, the e.g. you shared here is exactly what I need. I think you understand the question very well. Cheers.  
> **username_3**: Looking at the answers, you are after local strengthening, this can be done by changing the infill percentage around holes and is described in [this question](/q/6522/); this could imply that this is a duplicate.  
> **username_4**: Are you using screws similar to drywall screws which have a flat head that tapers down to the screw or a pan head screw which usually has a rounded head and flat bottom?  

---

## 3 answers

### Answer by username_5 on 2019-01-30. Score: 2 | Accepted answer

You can test different print settings. Trying to visualize, but I believe you can increase the **perimeter lines**, since there is a hole, this will increase the resistance in that area. Or try to change the **orientation** with which the part will be printed

> **Comments:**
> **username_0**: Hello thanks for your input, I am trying to find how to increase the perimeter line in Fusion360, where is it? :)  
> **username_5**: @Manolo These settings are made inside the CURA (**shell settings**)  

---

### Answer by username_6 on 2019-01-31. Score: 1

You can use a washer between the screw head and the plastic material to distribute the load

In my designs I also put in a depression to fit the washer so that it sits flush with the resultant surface.

[![Cad design with recessed washer holes](https://i.sstatic.net/2Mh31.png)](https://i.sstatic.net/2Mh31.png)

> **Comments:**
> **username_0**: Thanks for your reply, this is a good idea, I will try to do that as well.  

---

### Answer by username_7 on 2019-01-31. Score: 1

In order to add localised extra walls, I will sometimes *cut* a torus shape around the part that I want to strengthen. This can result in n\*wall, infill, n\*wall, void, n\*wall.

See the images in this [answer](https://3dprinting.stackexchange.com/a/7022/4927) if the description is not clear.


---

