FreeCAD is weak doing fillets so maybe modify your approach. You could try to sweep the profile for instance. I deleted a bunch of stuff and thru in a sweep. This way you can avoid most of the fillets. Using Sweep didn't occur to me. I'm so used to just filleting edges in my workflow! Thanks for th...

I can't see in the photo what angle you want to go through, I think this one you have to make the edge and the connection at the same time, but the maximum accepted is 0.5mm Yeah, something like that. But I didn't want to include that corner you have the arrow pointed to. Which is why I didn't have...

Kindly see the attached file. I'm pretty new to FreeCAD, but not to CAD modeling in general. In fact, as a practice, I'm redoing from scratch this headphone holder that I modeled on Fusion360 (that I've also successfully 3D printed and are using right now). I'm encountering issues with fillet. This ...