diff --git a/src/main/kotlin/net/shadowfacts/phycon/block/cable/CableBlock.kt b/src/main/kotlin/net/shadowfacts/phycon/block/cable/CableBlock.kt
index 222bfe8..40429a8 100644
--- a/src/main/kotlin/net/shadowfacts/phycon/block/cable/CableBlock.kt
+++ b/src/main/kotlin/net/shadowfacts/phycon/block/cable/CableBlock.kt
@@ -2,7 +2,6 @@ package net.shadowfacts.phycon.block.cable
 
 import net.fabricmc.fabric.api.`object`.builder.v1.block.FabricBlockSettings
 import net.minecraft.block.*
-import net.minecraft.block.piston.PistonBehavior
 import net.minecraft.entity.player.PlayerEntity
 import net.minecraft.item.ItemPlacementContext
 import net.minecraft.state.StateManager
@@ -53,19 +52,25 @@ class CableBlock(
 				Direction.WEST to createCuboidShape(0.0, 6.0, 6.0, 6.0, 10.0, 10.0),
 				Direction.EAST to createCuboidShape(10.0, 6.0, 6.0, 16.0, 10.0, 10.0)
 		)
-		private val SHAPE_CACHE = mutableMapOf<BlockState, VoxelShape>()
+		private val SHAPE_CACHE = Array<VoxelShape>(64) { key ->
+			val connectedSides = Direction.values().filterIndexed { index, _ ->
+				((key shr index) and 1) == 1
+			}
+			connectedSides.fold(CENTER_SHAPE) { acc, side ->
+				VoxelShapes.union(acc, SIDE_SHAPES[side])
+			}
+		}
 		val CONNECTIONS: Map<Direction, EnumProperty<CableConnection>> = Direction.values().associate { it to EnumProperty.of(it.name.toLowerCase(), CableConnection::class.java) }
 
 		fun getShape(state: BlockState): VoxelShape {
-			return SHAPE_CACHE.getOrPut(state) {
-				var shape = CENTER_SHAPE
-				for ((side, prop) in CONNECTIONS) {
-					if (state[prop] == CableConnection.ON) {
-						shape = VoxelShapes.union(shape, SIDE_SHAPES[side])
-					}
+			val key = Direction.values().foldIndexed(0) { i, acc, dir ->
+				if (state[CONNECTIONS[dir]] == CableConnection.ON) {
+					acc or (1 shl i)
+				} else {
+					acc
 				}
-				return shape
 			}
+			return SHAPE_CACHE[key]
 		}
 	}