diff --git a/calibration/test_patterns.cfg b/calibration/test_patterns.cfg
index 6b4b5d2..45d3271 100644
--- a/calibration/test_patterns.cfg
+++ b/calibration/test_patterns.cfg
@@ -109,7 +109,8 @@ gcode:
     G92 E0
     
     {% set step_size = (END_FLOW - START_FLOW) / STEPS %}
-    {% set cube_height = 20 %}
+    {% set layers_per_section = 4 %}
+    {% set layer_height = 0.2 %}
     {% set wall_thickness = 0.4 %}
     
     # Calculate cube corner positions (centered)
@@ -121,19 +122,20 @@ gcode:
     RESPOND MSG="Printing flow cube with {STEPS} sections"
     RESPOND MSG="Flow range: {START_FLOW} to {END_FLOW}"
     RESPOND MSG="Cube centered at X{BED_CENTER_X} Y{BED_CENTER_Y}"
+    RESPOND MSG="Each section: {layers_per_section} layers at Z0.2-{layers_per_section * layer_height}mm"
     
+    # Print all sections at same Z height (not stacked!)
     {% for step in range(STEPS) %}
         {% set current_flow = START_FLOW + (step * step_size) %}
-        {% set z_start = step * cube_height %}
         
         RESPOND MSG="Section {step + 1}/{STEPS}: Flow={current_flow}"
         
         # Set flow rate (via extrusion multiplier simulation)
         {% set flow_multiplier = current_flow %}
         
-        # Print walls for this section
-        {% for layer in range(4) %}
-            {% set z_height = z_start + (layer * 0.2) %}
+        # Print walls for this section (all at same Z levels)
+        {% for layer in range(layers_per_section) %}
+            {% set z_height = 0.2 + (layer * layer_height) %}
             G1 Z{z_height} F600
             
             # Wall 1 (front)