I am (completely) new to Blender, but I have a lot of experience with engineering 3D model software. I made the following in Inventor, but exactly what would be the standard way to achieve this in Blender?
I am struggling with whether it should be one object, where the block has had the curved section extruded from its surface. Or whether it should be two objects.
I also am struggling with how to create the two concentric arcs.
If you have no particular reason to do it with one mesh, do it with 2 separate meshes (or 2 separate objects), as it will be much simpler. For the curvy wall, create a cube, keep only an angle, select the angle edge:
Press CtrlB to bevel, use the mouse wheel to add segments, or type the parameters in the Operator box (at the bottom left of the 3D view):
Select all, press AltE (Extrude) and choose Extrude Faces Along Normals:
For the floor, create a plane, scale it, extrude on Z.
If you want to easily change the wall thickness, don't extrude, use a Solidify modifier and tweak the Thickness value:
Only apply the modifier when you're sure about the thickness (you need to be in Object mode to apply):
I would add a plane, go to edit mode, press E and move your mouse like this:
Then select these:
Press G X and move your mouse:
In object mode, press Shift + A: Curve → Arc
Change the angle to 90 like this:
Now press R Z -90
And with G, Shift + Z move your arc:
Select the last vertex:
Press E X and move the mouse:
In object mode, add another curve → rectangle.
And in your arc object, choose bevel-object: rectangle.
Now choose your rectangle again and size it to your needs:
Select "fill caps":
And with object → convert → to mesh, you can turn it into a mesh and select "autosmooth":
Result:
