Contents (3)
Crafting Better Belt Tiers
Your 
Tool Belt starts with only 2 storage slots, but you can craft upgraded versions to expand capacity up to 9 slots total. Each upgrade requires crafting a new belt in a crafting table using better materials.
Upgrade Process
1. Gather materials for the next belt tier. Each tier requires progressively better crafting ingredients.
2. Open your crafting table and place the materials in the recipe pattern for the upgraded belt.
3. Craft the new belt and place it in your belt slot (either equipped through Curios/Trinkets/Accessories, or kept in your inventory).
4. Transfer your items from the old belt to the new one—your old belt's contents won't automatically move over.
5. Repeat this process through each tier until you reach the final belt with 9 slots.
Tips
Keep your old belt in storage until you've confirmed the new one works. Plan ahead which tools you'll carry most often, since even the maximum belt holds fewer items than a full inventory row. Check your mod config if you want to adjust how many slots each tier provides.