In-game description
Squirt some of this on a block, and neighboring blocks will attach to it, visually. For example, if you glue a block, and there's a Dirt Block below it, the dirt block won't have a green top, because it will think there's a dirt above it! Use glue again to remove it.
This item can't be spliced.
This item never drops any seeds.
Recipe
10 Green Chemicals + 1 Red Chemical + 1 Pink Chemical
Additional Info
Block Glue is an item that was added on September 20th, 2014 along with the 13 new girl items and the new sponsored item - Carboard Box.
Announcement: STICK ON THIS: Today we introduce Block Glue. It's sort of tricky to understand (for pro builders only!), but it also allows you to control how borders work on blocks that have auto-filling.