diff --git a/src/stores/useModelStore.ts b/src/stores/useModelStore.ts
index 914b38a..6216d0c 100644
--- a/src/stores/useModelStore.ts
+++ b/src/stores/useModelStore.ts
@@ -556,6 +556,22 @@ export const useModelStore = create<ModelStore>((set, get) => ({
   gridCalibMode: false,
   setGridCalibMode: (gridCalibMode) => set({ gridCalibMode }),
 
+  sectionEnabled: { x: false, y: false, z: false },
+  sectionInvert: { x: false, y: false, z: false },
+  sectionLevel: { x: 0, y: 0, z: 0 },
+  sectionPanelOpen: false,
+  sectionPanelOpacity: 0.9,
+  setSectionEnabled: (axis, on) => set((s) => ({ sectionEnabled: { ...s.sectionEnabled, [axis]: on } })),
+  setSectionInvert: (axis, on) => set((s) => ({ sectionInvert: { ...s.sectionInvert, [axis]: on } })),
+  setSectionLevel: (axis, v) => set((s) => ({ sectionLevel: { ...s.sectionLevel, [axis]: v } })),
+  setSectionPanelOpen: (sectionPanelOpen) => set({ sectionPanelOpen }),
+  setSectionPanelOpacity: (sectionPanelOpacity) => set({ sectionPanelOpacity }),
+  resetSection: () => set({
+    sectionEnabled: { x: false, y: false, z: false },
+    sectionInvert: { x: false, y: false, z: false },
+    sectionLevel: { x: 0, y: 0, z: 0 },
+  }),
+
   wireframeColor: '#00f3ff',
   setWireframeColor: (wireframeColor) => set({ wireframeColor }),