Setting Up the Resource Pack Correctly
Access Resource Packs Menu
From the main menu, navigate to Options → Resource Packs. This opens the resource pack manager where you can enable and organize active packs.
Activate Block-Accurate 3D Item Model
In the resource pack menu, you'll see two columns: available packs on the left and active packs on the right. Locate Block-Accurate 3D Item Model in the available list and click the arrow or drag it to the active column on the right side.
Verify Activation
Once moved to the active list, the pack is now loaded. Return to your world or create a new one—3D item models should now appear immediately in your inventory and hotbar.
Manage Pack Priority
If you use multiple resource packs, the order matters. Packs higher in the active list take priority. Adjust the position of Block-Accurate 3D Item Model if other packs are overriding its models. You can reorder packs by dragging them within the active column.
Reload if Needed
If models don't appear after activation, press F3 + T (or your reload key) to refresh resources in-game.