Commit c49cd6b3 authored by Árni Björnsson's avatar Árni Björnsson
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Added another object to the 3D

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## Actually designing an additive only object
Turns out I did not actually design anything, so let's give it another shot!
How would you mill a sphere from within a cube? I have no idea! But with 3D printing, no problem!
Let's start with a simple cube. I take care to extract it in two ways, so the origin point of the sketch is the middle. This comes in handy in a moment.
<figure markdown>
![Cube](../images/week06/some01.jpg)
<figcaption>Cube</figcaption>
</figure>
<figure markdown>
![Origin point centered](../images/week06/some02.jpg)
<figcaption>Origin point centered</figcaption>
</figure>
Next, from the origin point we create a sphere. The cube body is hidden during this step.
<figure markdown>
![Sphere](../images/week06/some03.jpg)
<figcaption>Sphere</figcaption>
</figure>
Then we use the "Combine" function to cut the sphere from the cube. Notice the "Keep Tool" option in the dialog. If it's not selected, the part that's used to remove from the other (the tool), is discarded. Sometimes that is OK, other times it's not so good. Please take this into consideration.
<figure markdown>
![Combining/removing](../images/week06/some04.jpg)
<figcaption>Combining/removing</figcaption>
</figure>
Next, just to verify that it's actually hollow, we use the section analysis to take a peek
<figure markdown>
![Section analysis](../images/week06/some05.jpg)
<figcaption>Section analysis</figcaption>
</figure>
Good luck making this from a solid object on a lathe!
## 3D Scanning
As mentioned on another part of this site, my work is split 50/50 with the Fab Lab and the schools IT service. One of things I needed to get was a new WiFi access point mount. So, instead of ordering stuff online and scanning something just for the sake of it, I decided to squish two flies with one punch and do something useful.
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