My issue- In a nutshell: I'm so new to Fusion360. I created an Arc and extruded it. completed a "thicken" to .125 wall. Now I'm struggling to figure out how to make the inside cradle parts. I keep thinking 2D and want to do the outlines in draftsight, then bring into Fusion and see about extruding and curving the inner parts? Or do I create the small cradle parts and somehow place them into the solid arc? Yikes! Any ideas on how I should take a whack at this? Thanks. (thumbnail pics- Click on to open larger).