Help in making a heart shaped bowl

 From:  jfallie
1382.1 
I'm learning MOI.

Since it was the 14th today, I started making a heart shaped bowl. I thought it would be simple, but I haven't been able to do it.

I can't seem to find a way to give it thickess.

I tried many directions but here is what I have so far:

1- draw half a heart with the freeform-through points tool on the X Y plane
2- draw an arc shape with the freeform-through points tool on the Y Z plane
2- draw an arc shape with the freeform-through points tool on the X Z plane
3- do a sweep using the arc on the XZ plane as the profile, and the two other lines as rails
4- mirror to get the second half
5- joined the two surface
6- tried to offset-shell the heart shaped surface to give it thickness

That last step gives me strange results (see below)

Any thoughts on how to do it.

many thanks,
jf
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