Welcome to the SeeMeCNC Community

As a member recommended freeCAD i decided to give it go. It seems fairly easy to use however the stl output did not quite turn out as i expected. Anyone has any ideas?

None yet...

I have just loaded it

Same result as you I'm afraid.

Might be the way it is constructed, not much help

Did you try running it through NetFabb? Sometimes there are problems with the export process (disconnected triangles and the such) that NetFabb can repair.

Provided that you're selecting the correct parts, and have the right features of your model "turned on", it's got to be something between the export and opening it in the slicing program.

Have you tried a different slicer, just to eliminate variables?

Another test could be to save as a "real" CAD file, open it with something else, and do the STL export with a second program. It's hard to speculate what will fix it, you'll just have to try a little bit of everything

It was my first try. And i did not try that part again. But i believe it wqs because i left some degrees of freedom on my bottom sketch.

This is an old post but I wanted to answer the question in case anyone else has this problem.

The problem with the STL file is that the FreeCAD model hasn't been "fused" using the "Make Union of Several Shaps Tool" on the Parts workbench. Since it wasn't fused FreeCAD only exported the highlighted portion and not the entire model. I attached the fused and Re-Filled FeeCAD and STL files

Thank you for that.