I can't model this relatively simple shape.

[JulienFauv]

I want to create a shape that goes from a rounded square base to a circle following a curve. But Shapr3D won’t do that, and don’t know how to achieve it.

[SCALEMODEL]

Divide the flat sketches along the guidelines. So your sketch will look like X in the middle for both top and bottom.

[jean-philippe2]

Hi,
I think the points of your guides are not properly hooked.
I put in screenshot the same example that works.
But I’m not saying it’s the best way to get what you want.