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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?

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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.

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  • $\begingroup$ so do you want it to be one or 2 objects? $\endgroup$
    – moonboots
    Jun 30 at 18:09
  • $\begingroup$ @moonboots I am not experienced enough with Blender to know what difference it will make, I'm afraid, and why I should care if it is 1 or 2 objects. Thanks. $\endgroup$
    – teeeeee
    Jun 30 at 18:37
  • $\begingroup$ Welcome to Blender Stack Exchange! A couple of good concepts to understand in general are: 1. An object is like a container that holds your geometry. While in Edit Mode it's like you're poking around inside the container and changing the contents. When you move your object, its contents go with it. 2. Most objects contain mesh data (polygons). Some contain curve data (vector paths). There are other types of objects too. If you make a Linked Duplicate you'll end up with a second object shat shares the same inside data. A regular Duplicate has unique data. $\endgroup$
    – Mentalist
    Jul 1 at 16:45

2 Answers 2

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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:

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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):

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Select all, press AltE (Extrude) and choose Extrude Faces Along Normals:

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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:

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Only apply the modifier when you're sure about the thickness (you need to be in Object mode to apply):

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  • $\begingroup$ Thanks. Just out of interest - if I wanted to come back later and change the thickness of the wall, how would I do it? If I select the outer faces and then try to extrude along normals back the other way (in an attempt to reduce the wall thickness), then it cuts inside the wall, leaving theend caps in tact. $\endgroup$
    – teeeeee
    Jul 1 at 9:41
  • $\begingroup$ In that case maybe don't extrude and use a Solidify modifier instead, see my edit $\endgroup$
    – moonboots
    Jul 1 at 9:55
  • $\begingroup$ Great, this is useful to know! Thanks for the edit. $\endgroup$
    – teeeeee
    Jul 1 at 11:03
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I would add a plane, go to edit mode, press E and move your mouse like this:

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Then select these:

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Press G X and move your mouse:

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In object mode, press Shift + A: CurveArc

Change the angle to 90 like this:

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Now press R Z -90

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And with G, Shift + Z move your arc:

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Select the last vertex:

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Press E X and move the mouse:

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In object mode, add another curve → rectangle.

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And in your arc object, choose bevel-object: rectangle.

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Now choose your rectangle again and size it to your needs:

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Select "fill caps":

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And with object → convert → to mesh, you can turn it into a mesh and select "autosmooth":

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Result:

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    $\begingroup$ Thanks very much, either answer would solve my problem - the one above just seemed to be quicker, with fewer steps. Thank you. $\endgroup$
    – teeeeee
    Jul 1 at 9:47
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    $\begingroup$ It took me a while to figure out, but it seems like you need to enable an "Add On" to get the "arc" option that you used, right? $\endgroup$
    – teeeeee
    Jul 1 at 11:20
  • $\begingroup$ That’s right ‼️‼️‼️ $\endgroup$
    – Chris
    Jul 1 at 11:25
  • $\begingroup$ Thanks. In your answer, you have a step which says "and in your arc object choose bevel-object: rectangle". Is this an option that should be found somewhere after selecting the arc and going into Edit Mode? Thanks so much for your patience :) $\endgroup$
    – teeeeee
    Jul 1 at 11:29
  • $\begingroup$ If you click on the curve symbol of the arc (curved line with 2 rectangles in green) you can see a bevel section (maybe you have to oben it by clicking) , then click on „object“ and then you can choose anno object $\endgroup$
    – Chris
    Jul 1 at 11:33

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