How do items stack in Terraria? [duplicate]
Solution 1:
If you look on the Terraria Wiki at the pages for individual items, you can see how many items can be in a stack for each item.
For example, buckets stack to 99, whereas most potions stack to 30. It really just depends on the item.
Usually, any tiles or building materials will stack to 999, whilst crafting materials will only stack to 99. Also, most tools and weapons will only stack to 1, with a few exceptions such as the Light Disc which stacks to 5 instead.