Diagonal Fences — a building mod for adding 45-degree diagonal fence connections in Minecraft

Diagonal Fences — a building mod for adding 45-degree diagonal fence connections in Minecraft

Diagonal Fences adds the ability to connect fences at a 45° angle in Minecraft. In vanilla, fence segments only connect along the four cardinal directions — north, south, east, and west. Any diagonal fence line ends up jagged: individual posts without crossbars, leaving block-wide gaps between them. The mod removes this limitation — new connections form automatically as soon as two fences are placed diagonally adjacent.

Sequential diagonal placement of fences forming new shapes

How diagonal connections work

The principle remains the same as in vanilla: the fence "reaches" towards neighboring blocks automatically, without any crafting or additional items. The only difference is that blocks placed diagonally from a segment are now also considered neighbors. If you place two fences one block apart diagonally, a crossbar at a 45° angle will appear between them.

The hitbox of the crossbar is also diagonal — meaning mobs won't slip through the connection, and the player cannot jump over the fence from the side where it was previously technically absent. This behavior is maintained across all fences.

Cows behind a diagonal fence

 Support for fences from other mods

Diagonal Fences dynamically detects blocks acting as fences and applies the same logic to them. No separate configuration for modpacks is needed — extra fences are picked up automatically if they are registered via the standard Minecraft mechanism.

If a block incorrectly receives diagonal behavior (e.g., a decorative item that only visually resembles a fence), it can be excluded from processing via the system block tag:

diagonalfences:non_diagonal_fences

Blocks added to this tag via a datapack are completely ignored by the mod — they act exactly as in vanilla. This allows targeted fixes without deleting the mod itself or editing other resources.

Config

Configuration files are stored in .minecraft/config/ and start with the prefix diagonalblocks- 

diagonalblocks-common.toml

diagonalblocks-server.toml

Conclusion

Diagonal Fences solves a key architectural issue — smooth diagonal enclosures, which are impossible to build in vanilla Minecraft without a jagged effect. The mod does not introduce new blocks, change recipes, or touch any other mechanics beyond fence connections — making it safe to drop into an existing world without side effects. Suitable for survival servers where players frequently build structures with uneven angles, as well as creative maps with decorative perimeters.