diff --git a/src/stores/useModelStore.ts b/src/stores/useModelStore.ts
index 34afc02..c9ce865 100644
--- a/src/stores/useModelStore.ts
+++ b/src/stores/useModelStore.ts
@@ -317,6 +317,12 @@ export const useModelStore = create<ModelStore>((set, get) => ({
   showGrid: true,
   setShowGrid: (showGrid) => set({ showGrid }),
 
+  gridY: -0.09,
+  setGridY: (gridY) => set({ gridY, gridAutoFollow: false }),
+  gridAutoFollow: true,
+  setGridAutoFollow: (gridAutoFollow) => set({ gridAutoFollow }),
+  nudgeGridY: (delta) => set((s) => ({ gridY: s.gridY + delta, gridAutoFollow: false })),
+
   wireframeColor: '#8899aa',
   setWireframeColor: (wireframeColor) => set({ wireframeColor }),