How to create 3D Brick effect on non-square faces

I am trying to create a 3D brick effect on a curved face. Top of face is not perpendicular to the sides so need to slice/taper the top row of bricks.

Way I started to do this was to create 3 brick components (full brick, and 2 half bricks (left and right)) and repeat these to cover the wall.

Then I intersect faces to slice the top of the bricks off, I had then hoped to pull the component brick faces out to give 3D effect, but I seem to lose this capability once I intersect faces.

I tried the pull first then intersect faces, but this seems to return the bricks to a flat face.

Is there an efficient way to achieve what I want?

I attach screenshot to give better context. In foreground is full arrangement of bricks, then on the face of the object I have intersected faces showing the sloping top. You also see the full structure in the background where I want to apply solution to 34 faces.

Any help would be much appreciated.

Do you need them to be modeled? You can use a texture to make it faster and it won’t increase the size of your file as geometry would do.

By the way you have back faces exposed, the gray/blue faces are supposed to be facing the inside, you should see only white faces on monochrome style.

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Thanks for reply @francisquitof, I intend to 3D print the finished model. So wanted to add some 3D texture rather than just visuals.

Thanks for the pointer on the faces.

If you make a solid wall without the bricks and leave the individual bricks as separate solid components, there’s no need to try to join or trim them into one solid. The slicer will do that for you when you export the STL file for printing.



Thanks for reply @jimhami42, that is good to know. I guess what I am struggling with is how to quickly add this effect to 34 faces, all slightly different (different heights etc.) My thinking was to add the complete wall as shown in my foreground to each face then use the intersect to cut the top of the bricks correctly, rather than fiddling with each face separately.

You must fix the normals then, otherwise the slicer will show weird results.

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Your profile says you are using SketchUp Go which is the web based version. Is that correct?

If I were going to model this wall I would start by making each segment an instance of the same component and not worry about the slope to start with. I would add the bricks as @jimhami42 directed and then model a “cutter” shape for sloping the top of the wall. From there I would use Trim from the Solid Tools to cut the wall sections and the bricks along the top.

Is there supposed to be a cap on this wall?

Thanks @DaveR I will give it a go to the way you describe. Yes, I am using web version. No I don’t think I will have any cap on the wall

If the curve is a semi circle, then you could use the rotate tool copy on the the panel of bricks , rotating around the centre of the semi-circle

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Here I made a quick example.

Brick wall section set up per @jimhami42. Use Copy/Rotate about the center of the arc for the wall. I left the short wall segment as a component and copied it with the bricks but you wouldn’t have to do that. The brick units are components containing the brick elements instead of leaving the bricks as individual components. The key is that all of your objects are identified as solids.

I created an angled cutter. In this case I used the Pie tool and rotated it at its apex. You could create the cutter any way you want. It also needs to be considered a solid component or group by SketchUp in order for the next step to work.

Using the cutter with Trim from the Solid Tools, I cut the tops off of the wall objects. Note that I now have 12 solid groups. The Solid Tools convert the components they modify into groups.

And exported as a .stl and imported into the slicer.

A lot of this could be simplified in SketchUp Pro with the addition of some extensions but this will work in SketchUp Go.


Thanks @DaveR for the instructions, I am continuing to work on it i’ll come back again once I have conquered it. Think I must have done something wrong as not quite working for me yet as seems to take an imprint of the wall and not actually cutting it.

Yes. It looks like you’ve done it backwards.

The tool tip for Trim shows this:
Screenshot - 12_21_2023 , 9_39_45 AM

Recite the following mantra when you are using Trim or Subtract from the Solid Tools.

Use this to TRIM that.

SUBTRACT this from that.

The other tools really don’t care which order you select the objects.

Brilliant! Thanks for all your help @DaveR and others.