It is easily built using surfaces if you are just looking to replicate the geometry of the picture.
Create the base and then one vertical wall. You can then pattern the vertical wall and merge all of the quilts together. Then thicken the quilt to get a solid model. The surfaces are all planar so you can sketch the shape and then use the fill command to create the two required surfaces. See the model tree below. The pattern is an axial pattern using 90 degree increments.
I was maybe a bit unclear. I'd like the finished part to look like this. Thin walls or solid doesn't matter. I will only use the outer geometry.
Since you have the blank and want to create the shape that it would form, Here is a sketch that I would suggest:
In this example, the center base is 100, the radius of the sides is 250, and the length of the blank sides is 225. I used perimeter dimension of 225 to control the resulting height.
End result:
Perimeter is a good tool 🙂 Much appreciated your help! I wish it was that easy 🙂 I think I simplified my example a bit too much. This is more what it is about. Apart from this the top is angled and formed as a trapezoid and bottom is a rectangle. The real thing is more like this. Know the length of the edge but as you can see it's not oriented in a plane 😞 I must, in some way bend plane surfaces with known geometry to each others edges.
Perimeter can be used to control the length of multiple curves. The hard part in creating the model will be accounting for the thickness and bending stretch to get finished shape from the blank.
