Hi,
I'm trying to make this shape into a solid. What you see is my attempt to sweep the 12 o'clock and 6 o'clock sections as profiles and the front and back curves as rails. I then have to planar surface both front and back to get four surfaces and then join to get a solid. There must be a better way ... Ultimately I want to subtract this solid from another solid.
If I reverse the picking order of the profiles and rails it pops a solid the first try but I loose the radiuses .

Thanks for your time.

hi there!

i would use the front/back curves as profiles and the the other 2 as rails. make sure to select "Maintain tangent" to keep those radiuses.

Thank you Marco for the quick reply !
What I wasn't happy with using the front/back curves as rails was that I was loosing the radius at the 3 & 6 o'clock positions. What I did was add a radius profile at the 3 o'clock position and use it as a scaling rail and also picked 'maintain tangent' and it looks like what I wanted !
Thanks again !

...with the maintain tangent option those radiuses should actually be "there"..even without the additional(3/9o'clock) curves..