To create items in Roblox, you need Blender, Roblox Studio, and the Asset Creator plugin. First, open Roblox Studio and go to the Avatar tab. Use the Rig Builder to spawn a block rig dummy at position (0, 0, 0).
Next, right-click on the dummy, choose “Export Selection,” and save it as an OBJ file on your computer. Open Blender and import the saved OBJ file by going to “File” > “Import” > “OBJ.”
Design your item in Blender using its various tools and techniques. Once your item is ready, export it by selecting “File” > “Export” > “FBX” and saving it.
Head back to Roblox Studio, open the Asset Manager, and click the “Bulk Upload” icon. Choose your exported FBX file to upload it. Resize and position your item on the dummy as needed.
For a custom thumbnail, use the UGC Thumbnail Tool to create an appealing image for your item in the catalog. That’s how you can create items in Roblox.