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Novice user here. I want to create cross sections of a model that was imported to blender from sketchfab but have been unable to. This problem is very similar to the prior stack exchange question/answer (Create Cross Sections and 2D planes in Blender). The difference here is the model I'm starting with consists of multiple objects.

I think the issue is that the model consists of multiple objects.

In order to join the model into a single object I tried both “control J” and the boolean modifier “union”. While I eventually was able to join all of the objects into one, blender would freeze or give different outputs when attempting to get a cross section of an area that previously consisted of separate parts.

Aside from joining the model into a single object, I also attempted to place a plane that crossed over the model and then applied the boolean modifier “difference” to create a cross section out of the plane. This method was effective when the plan interested a single piece of the model but would then start to give different outputs when intersecting more than one piece.

Here is a link to the Sketchfab model I am trying to create cross sections from : https://sketchfab.com/3d-models/baby-f05a87806cad49feb75ac7659d55c368

Summary: 1.) How do I consolidate the sketchfab model into a single object? 2.) How do I get cross sections from the consolidated model?

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    $\begingroup$ you model doesn't help us, you should better provide your blend file with your try so we can reproduce your problem $\endgroup$
    – Chris
    Dec 14, 2021 at 17:13

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Without joining the model, It seemed to work with an array modifier to one plane, and adding the difference boolean modifier to each of the halves of the model using the plane as the object to er...cut the baby into cross sections.

enter image description here

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  • $\begingroup$ Blender did crash. I tried again the simplest possible way and it worked just fine. The only thing I can think of is that in the import settings for FBX I unchecked subdivision data. This baby has 467 K TRIS and maybe unchecking subdivisions helped. $\endgroup$ Dec 16, 2021 at 0:08

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