Using the excellent open source software that's available it's pretty easy to make a printable model of a circuit board, here's how I usually do it:
Once I have a board designed in KiCad I export the .vrml file:
![](https://infinityplays.com/content/images/2023/08/T59-1.png)
![](https://infinityplays.com/content/images/2023/08/T59-2.png)
Then I import the .vrml file into MeshLab:
MeshLab
![](https://www.meshlab.net/img/meshlabjsLogo.png)
![](https://infinityplays.com/content/images/2023/08/T59-3.png)
And export it as an stl file:
![](https://infinityplays.com/content/images/2023/08/T59-4.png)
![](https://infinityplays.com/content/images/2023/08/T59-5.png)
Now the Stl file can be imported into OpenScad and can be used to design a case or whatever else you might need to do with it:
![](https://infinityplays.com/content/images/2023/08/T59-6-1.png)