Hi Derek, here are some steps that would probably be easier for building a piece like this, working more with solids throughout rather than by going around filling in little patches.

To start with I drew a curve:



Then mirrored it and extruded it out into a solid block:



Now use Fillet to round off all the sharp edges:



Then prepare another curve, I used Construct > Offset to offset the original curve inwards a bit:



Then use Boolean Difference to cut the solid by the offset curve, to make a sharp inside cut, leaving the fillet around the outside to be rounded:



Things can tend to go more simply and quickly by working on a carving out pieces away from a solid like this. Hope this helps,

- Michael

I just love these kinds of posts!

For me, that object type indicator is one of the most important features of v2 - I can tell at a glance if the object I have in hand is not a solid the way I expect it to be!

-Will

Michael,

I really feel appreciated for your quick answer. I fully understood what you say.
I was designing a mobile device case for my own. This is the part of it.
I go to a local CNC club meeting in Portland, OR.
Next time I go there I plan to demonstrate MOI.

Thanks again Michael. I'll probably be back to ask you for technical issue.