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Backpacks are storage items used in Forestry and Railcraft to expand the player's inventory. Most basic Backpacks contain 15 storage slots and can be upgraded to Woven Backpacks which contain 45 item slots. While carrying a backpack anywhere in the inventory, picked up suitable items will be automatically stored and stacked in the backpack unless in locked mode. Backpacks themselves do not stack. To see the inventory of a backpack, Right-click in the air while holding the backpack in your hand.
Basic backpacks hold up to 15 stacks of pack-specific items.
The crafting table recipe is similar for all packs: corners of string, center chest, top and bottom wool, left and right are pack-specific components.
- Digger's Backpack - Stone. Holds most basic blocks including Cobblestone, Gravel, Dirt, Flint, Clay, etc.
- Miner's Backpack - Iron Ingots. Holds ore blocks and ore drops including Iron, Copper, Tin, Diamond, Coal, Silver, etc.
- Builder's Backpack - Clay. Holds building materials and scenery including Brick, Stairs, Fences, Glass, Torches, etc.
- Forester's Backpack - Any wood blocks. Holds nature blocks and drops including Wood, Saplings, Sticky Resin, Leaves, Seeds, Flowers, Mushrooms, etc.
- Hunter's Backpack - Feathers. Holds the majority of mob drops; including Eggs, Feathers, Ghast Tears, and Blaze Rods, etc.
- Adventurer's Backpack - Bones. Holds nothing by default. Supposed to be configured to one's likings.
- Thaumaturge's Backpack by Magic Bees - Amber. Holds the majority of the items added by Thaumcraft.
- Computer Engineer's Backpack by Misc Peripherals - Floppy Disks. Holds the majority of ComputerCraft items.
- Iceman's Backpack by Railcraft - Snow. Holds Ice, Snow, Snowballs, etc.
- Trackman's Backpack by Railcraft - Tracks. Holds Tracks, Minecarts and the majority of Railcraft items.
Do not upgrade to a woven version.
- Apiarist's Backpack - Apiarist's Chest and Sticks. Holds up to 125 stacks of bees, princesses and drones.
- Lepidopterist's Backpack - Lepidopterist's Chest and Sticks. Holds up to 125 Butterflies.
All basic backpacks listed above can be upgraded into a Woven version with a Carpenter & 1B water, which increases the space to 45 inventory slots.
The carpenter recipe is similar for all packs: a tall U of Woven Silk with the basic backpack in the middle and a diamond on top. 1B of water in the liquid slot.
You can toggle the mode of the backpack's operation by holding Shift (Crouch button) and Right-clicking in the air with the backpack in-hand. They work in sequence, listed below;
- Normal (no added icon) - This mode takes the items allowed in the backpack from the ground and puts it directly into the backpack saving space in the players inventory.
- Lock (lock icon) - Can place items into a backpack manually, but does not pick up new items from the ground.
- Resupply (yellow arrow down icon) - If any item in the backpack matches the item in players hotbar or inventory, it will automatically refill it up to a full stack (if possible by the item in question). Example: Player has a stack of Stone Brick in the hotbar and 3 stacks of same Stone Brick in the backpack. As soon as player places down that Stone Brick, the stack will refill back to full (64) for as long there is enough Stone Bricks in the backpack.
- Receiving (green arrow up icon) - When shift right-clicking a chest, it will fill up the backpack with any blocks (matching to the type of backpack) from the chest.
It is possible to add additional items that go into the backpacks through modification of the Forestry configuration files. (Please note that the config files should be in sync between the client and the server in SMP). Locate your Forestry configuration folder and edit the file "backpack.conf" with the item IDs of your choosing.
This is especially important for the Adventurer's Backpack.
- Forestry Backpacks will only react to items being picked up from the ground, e.g. not to items put in the inventory through a GUI, like taking items out of a chest. This can cause some inconveniences when mining with a Wand of Equal Trade or other tools that directly insert into the player's inventory, as it will quickly fill it up, especially when a matching backpack is set to resupply mode.