Blender imported wolf with multiple meshes is hollow

The Building Support sub-category is intended for all development support relating to architecture on the Roblox platform. This includes questions ranging in difficulty from extremely basic to even the most technical of issues.

  • What are you attempting to achieve? I’m trying to fill in my mesh parts in this wolf model.
  • What is the issue? (Keep it simple and clear - Include screenshots/videos/GIFs if possible) Each part is completely hollow and transparent on the inside, and it makes animating very difficult to look nice.

https://youtu.be/ETkdB2NhcO0 (Heres a video - it was too large to attach here.)

  • What solutions have you tried so far? (Have you searched for solutions through the Roblox Wiki yet?) I’ve looked on the dev hub, but saw nothing about multiple meshes like this.
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Some questions to ask yourself:
Are your faces thick and not hollow in the inside?

How did you import the mesh, did it alter anything?

When you open the object file, does it appear to look hollow?

I hope this helps. Refer to what program you made the mesh in and try to find experienced people with that program to help you if the problem isn’t fixed. I hope this can get you closer to where you need to be. Cheers!

that is backface culling my good sir, your normals are not recalculated, https://gyazo.com/2b102aef39951cbb504d16fdecaf558b this should fix it, if it doesnt then im beat

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Hmm now it just does this https://youtu.be/Pc-NmEXWc_g

I think your normals are now the wrong way round. Try using a solidify modifier in blender before you import the mesh. For the original video, just create faces where the gaps are (select all surrounding vertices and press f).

I selected them all and pressed F, but it just kinda broke my model

This is similar to your question and might help.
Also, if it has something to do with normals, that has been asked many times already. (@Aotrou has answered that question quite a lot)