For the CAM (translation of the design to the machine readable G-code) I am using Estlcam. This is a favorable software for this stuff.

Currently I have no idea how to connect the parts together. But this will apear later...

The design is ready so far. Because I am a big fan of open source software, I decided to take FreeCAD. This is a great tool to design things in 2D and 3D!