What it does

Pocket Dimensions are portable 3x3 bases that fit inside a small wooden box. You can carry them in your inventory and deploy them anywhere. Inside is a full 9x9x9 meter space for storing, crafting, smelting, growing, or living.

How to use it

Build a 3x3x3 cube that meets validity requirements
Open your Tool Cupboard and press the pink "Convert to Pocket Dimension" button
You'll get a box containing your entire build
Deploy the box anywhere to enter your pocket dimension

Important warnings

If the external wall/door decays, gets raided, or is removed, your dimension collapses
When it collapses, everyone inside gets teleported out and all items drop where the box was
Keep up your building upkeep to protect from raiders
You can pick up and move your pocket dimension boxes anytime