I have been modeling over 10 years with a Sketchup and I am nowadays 3d printing many of my 3d modeled parts. This is the reason why I would like to have a better tool to create 3d printed parts (fillets, boolean, etc.).

I have been watching Moi3D YouTube tutorials and I just downloaded the trial version of the Moi3D. What would be the basic logic to model this kind of part in Moi3D? I am so stuck with Sketchup thinking that I have not been able to figure out how to model the basic shape and still be able to fillet edges.

In Sketchup I would probably:'
-Model the bottom shape
-Extrude half way up (to get the edge in the centre)
-Extrude to the top
-Scale the edge in the centre
-Fillet the edges to get nice 3d print (Sktchup has some limitations in this)

This is the kind of part I am trying to model:


This is what I have been trying to model in Moi3D