“Hello~ Recently I was directed to your tutorial on converting clothes
and I find it very helpful. However do you know how to convert objects
too? Because I’ve been wondering how to convert objects from The Sims 4
to The Sims 3.“– PM
You’re in luck, dear simmer. The way I do it, converting from TS4 to TS3 is just as easy as converting from
☆
. Follow that tutorial to wade your way through the muck of Milkshape. This tutorial just gets you covered on getting the meshes and textures OUT of TS4 so you can work with them. 😉
Upwards and onwards! ^0^
☽✶•.¸(✶•.¸★¸.•✶´)¸.•✶´☾ ☆«´¨`•°°•´¨`»☆ ☽.¸.•✶(¸.•✶´★`✶•.¸)`✶•.☾
Welcome to Murf’s School of Crap and Crap-Making!
School Motto: Prepare to be tortured! For Science!
Lesson #9: TS4 to TS3 Conversion
☽✶•.¸(✶•.¸★¸.•✶´)¸.•✶´☾ ☆«´¨`•°°•´¨`»☆ ☽.¸.•✶(¸.•✶´★`✶•.¸)`✶•.☾
Alright, so there are THREE different tools you can use to extract the textures and meshes out of TS4 objects CC, and an extra you can use solely for CAS CC.
There’s S4PE, the updated TSRW, and, the one that I personally like using, Sims4Studio.
Start a New Project in Sims4Studio, by clicking My Projects and opening whatever .package file you want to work with.

When you’ve selected a file, you’ll get a 3D screen and a bunch of crap on the side. Go to the Texture and Mesh tabs.

Depending on what you’re converting, the CC might come with 1 or more Swatches (color variations). Click each Swatch you see, and click the green Export button to extract them (.dds format).

In the Meshes tab, there’s a dropdown list for LOD0/½/whatever, so click each of them and press the green Export button for them, too.
The meshes come in .blend format, a Blender file (the program’s free; don’t panic). Luckily, it’s super easy to extract the golden .obj files out of Blender.
Just double-click the .blend file it gives you, and wait for Blender to load.

ALL YOU NEED TO DO is go to the File menu, scroll down to Export, and then scroll down to Wavefront (.obj). Click that, and it’ll take you to a screen to save your mesh as an .obj file. Click Export OBJ and you’re done!
Now you can go into Milkshape and mess with everything! ^__^
I have never updated my TSRW past 2.0.80, so I can’t vouch for how it’s done there, but with S4PE it’s the exact same process you’d use with TS3 mesh and texture extraction:
Start a New project in S4PE:

Import whatever .package file you want to convert.

(Resource menu, and scroll down to Import > From Package)
You’ll get a handful of silly prompts; click Import, then No when it asks you to Auto-Save.

Then you get a screen of crap. Two steps left!


In the Tag menu, find the ones labeled _IMG and MLOD. The Img is the texture (in .dds format) and the Mlod is the mesh (in .lod format).
You’ll need the proper plugins to get .dds files to work in Photoshop/Gimp, and .lods for (I think?) Blender. Someone might have to correct me on this; I have a S3PE .lod plugin for Milkshape, but I never got around to looking for one for TS4.
Again, read the
☆
tutorial to follow my steps on working with the mesh and textures in Milkshape.
Hope this helps!