@masa.minohara Thanks I was about to reply with a very similar solution! The problem is at the edges where the bodies meet, it's causing a solver error. I'll log a bug for it.
@calexpavel Welcome to the Fusion 360 community. Thanks for posting this, what a cool model!
I found that the edges where the lip bodies meet the shell bodies are causing problems.
There are a few ways to tweak the model so the combine will succeed. Masa shows one, this is how I did it a little differently.
- For the top I used Press-Pull to expand the lip 1mm. After the Combine, use Press-Pull to move the face back -1mm.
- For the bottom, Press-Pull the lip face inwards a small amount, like -0.5mm. The Combine will work.

Please keep us posted on your progress, this looks cool. If you have more questions let us know.
Thanks,
Phil Eichmiller
Software Engineer
Quality Assurance
Autodesk, Inc.