BREP conversion, inside corner fillets

[scottS4EDN]

I've got the attached drawer I'm trying to convert to a solid body.  I've managed to get rid of most of the triangles on major faces, but having a hard time with the curves.  I'd like to get rid of the inside fillets so I can add things to the inside of the drawer and do my own fillets later. 

I've followed several tutorials and one covered almost just what I needed on the outside corner, which was complicated enough for me.  But cannot figure out how I can get ride of the inside curves.  I've tried several things but haven't managed to get it to work.  One way I ended up with surface bodies missing more than one plane that I couldn't figure out how to stitch back together.  Not having any luck extending sides and bottom faces if I chop out the curves.  Even tried projecting the top pattern, traced it in a sketch then extruding down into this beast.  Also failed for me.

Grateful for some help on how-to do this.

[wmhazzard]

It would be easier to model that from scratch instead of starting with a mesh. 

[scottS4EDN]

Starting from scratch is always an option.  In my case its as much about learning as doing the actual conversion.  I'm hoping for some help on the best way to do this on somehting relatively small and simple.  If I can't do it here, I'd be in worse shape on something more complicated.  I'm disappointed merge won't merge these relatively simple curves into non warped curved surfaces.  Without heroic efforts.  Seems like a miss to me.  In any case, still grateful on a how-to for getting inside 3-way corner fillets cleaned up/removed.

[jeff_strater · Accepted solution]

For a part like this, I would choose a "reverse engineering" workflow using Create Mesh Section and Fit Curve to Mesh Section as the easiest way to get a BRep from a mesh.  See this post for some discussion on how to do this:  what-is-the-workflow-to-reverse-engineer-an-stl-based-body .  Here is another similar thread:  reverse-engineer-a-low-poly-mesh-into-fusion360-body 

Trying to do this face-by-face is definitely not the way that I would approach it.  Take a more holistic approach, IMO.

[wmhazzard]

Learning by doing something difficult is great, it is just that deleting faces that came from a mesh is not the best way of making a model from a mesh. Like @jeff_strater says, using the mesh section sketch is a great way to make a model from a mesh which will also help teach you different ways of working in Fusion.  If you have to work with meshes then there are better suited programs than Fusion.   

[scottS4EDN]

Thank you. I’ll read those threads and see if I can figure that out.