The whole thing or just the seat - leg grooves?
This is the seat part of the chair, not the legs.
Start with a flat plate.
Sweep a profile around the boundary.
Sweep another profile up the middle.
Might help....
Can I possibly receive the file?
Ok, but prefer you try things out for yourself.
Beware my whole file is not fully defined because I only needed the pics.
Might help...
Hi @davebYYPCU
I have looked at your solution and I like it very much. I wouldn't have known how to do that. Thank you for showing it.
Now I only let the outer bead run out a little more gently.